New Upstream Release - cvxopt

Ready changes

Summary

Merged new upstream version: 1.3.1+dfsg (was: 1.3.0+dfsg).

Resulting package

Built on 2023-07-29T21:14 (took 19m56s)

The resulting binary packages can be installed (if you have the apt repository enabled) by running one of:

apt install -t fresh-releases python-cvxopt-docapt install -t fresh-releases python3-cvxopt-dbgsymapt install -t fresh-releases python3-cvxopt

Lintian Result

Diff

diff --git a/.github/workflows/_add_bootstrap.py b/.github/workflows/_add_bootstrap.py
deleted file mode 100644
index 2119017..0000000
--- a/.github/workflows/_add_bootstrap.py
+++ /dev/null
@@ -1,63 +0,0 @@
-#!/usr/bin/env python
-
-import os
-import sys
-import textwrap
-
-
-def add_bootstrap(bld_dir):
-
-    with open(os.path.join(bld_dir,'__init__.py'),'r') as fd:
-        init_str = fd.read()
-
-    if init_str.find('_openblas_bootstrap') == -1:
-        with open(os.path.join(bld_dir,'__init__.py'),'w') as fd:
-            fd.write(init_str.replace('import cvxopt.base','from . import _openblas_bootstrap\nimport cvxopt.base'))
-
-    with open(os.path.join(bld_dir,'_openblas_bootstrap.py'),'w') as fd:
-        fd.write(textwrap.dedent("""
-            '''
-            OpenBLAS bootstrap to preload Windows DLL in order to avoid ImportError.
-            '''
-            import os
-            import threading
-
-            _openblas_loaded = threading.Event()
-
-            def _load_openblas_win():
-                
-                if _openblas_loaded.is_set(): 
-                    return
-
-                old_path = os.environ['PATH']
-                lib_path = os.path.join(os.path.abspath(os.path.dirname(__file__)), '.lib')
-                try:
-                    os.add_dll_directory(lib_path)
-                except:
-                    os.environ['PATH'] = os.pathsep.join([lib_path, old_path])
-
-                from ctypes import cdll
-                try:
-                    cdll.LoadLibrary(os.path.join(lib_path, 'libopenblas.dll'))
-                except OSError as e:
-                    raise ImportError("Cannot find OpenBLAS") from e
-                else:
-                    _openblas_loaded.set()
-                finally:
-                    os.environ['PATH'] = old_path
-
-            if os.name == 'nt':
-                _load_openblas_win()
-            """))
-
-if __name__ == '__main__':
-
-    if len(sys.argv) != 2:
-        print("Usage: %s build_dir" % (sys.argv[0])) 
-        sys.exit(0)
-
-    if not os.path.isdir(sys.argv[1]):
-        print("Directory %s does not exist." % (sys.argv[1]))
-        sys.exit(-1)
-
-    add_bootstrap(sys.argv[1])
diff --git a/.github/workflows/dsdp.patch b/.github/workflows/dsdp.patch
index 432f8a9..891166e 100644
--- a/.github/workflows/dsdp.patch
+++ b/.github/workflows/dsdp.patch
@@ -1,7 +1,6 @@
-Binary files DSDP5.8/.DS_Store and DSDP5.8_patched/.DS_Store differ
-diff -ruN DSDP5.8/Makefile DSDP5.8_patched/Makefile
---- DSDP5.8/Makefile	2005-10-21 21:31:14.000000000 +0200
-+++ DSDP5.8_patched/Makefile	2017-02-13 10:57:50.000000000 +0100
+diff --color -ruN DSDP5.8/Makefile DSDP5.8_patched/Makefile
+--- DSDP5.8/Makefile	2005-10-21 21:31:14
++++ DSDP5.8_patched/Makefile	2023-04-10 15:13:26
 @@ -1,5 +1,5 @@
  
 -default: 
@@ -9,16 +8,31 @@ diff -ruN DSDP5.8/Makefile DSDP5.8_patched/Makefile
  	make all
  
  D1       =  src
-@@ -10,33 +10,22 @@
+@@ -10,51 +10,27 @@
  include make.include
  
  dsdplibrary: chkroot info
 -	cd ${D1}; make all
 -	${RANLIB} ${DSDPLIB}
--
++	cd src; make all
++	mkdir -p objs
++	find src -name '*.o' -exec mv {} objs/ \;
+ 
 -example:
 -	cd ${D2}; make most
--
++install: dsdplibrary
++ifdef IS_OSX
++	${CC} $(ARCH_FLAGS) -dynamiclib -install_name $(PREFIX)/lib/libdsdp.dylib \
++		    -current_version 5.8 -compatibility_version 5.8 \
++				-o $(PREFIX)/lib/libdsdp.dylib \
++				objs/*.o ${LAPACKBLAS}
++else
++	${CC} -shared -Wl,-soname,libdsdp.so \
++	 	    -o ${PREFIX}/lib/libdsdp.so \
++				objs/*.o ${LAPACKBLAS}
++endif
++	${CP} include/*.h ${PREFIX}/include
+ 
 -test:
 -	cd ${D4}; make all
 -
@@ -40,26 +54,10 @@ diff -ruN DSDP5.8/Makefile DSDP5.8_patched/Makefile
 -
 -all:
 -	make install
-+	cd src; make all
-+	mkdir -p objs
-+	find src -name '*.o' -exec mv {} objs/ \;
-+
-+install: dsdplibrary
-+ifdef IS_OSX
-+	libtool -dynamic -install_name ${PREFIX}/lib/libdsdp.dylib \
-+		    -current_version 5.8 -compatibility_version 5.8 \
-+				-o ${PREFIX}/lib/libdsdp.dylib \
-+				objs/*.o ${LAPACKBLAS} -lSystem
-+else
-+	${CC} -shared -Wl,-soname,libdsdp.so \
-+	 	    -o ${PREFIX}/lib/libdsdp.so \
-+				objs/*.o ${LAPACKBLAS}
-+endif
-+	${CP} include/*.h ${PREFIX}/include
- 
+-
  clean:
  	cd ${D1}; make clean
-@@ -44,17 +33,4 @@
+ 	cd ${D2}; make clean
  	cd ${D4}; make clean
  	${RM} lib/lib* matlab/dsdp.mex*
  	${RM} *~ */*~ */*/*~
@@ -78,9 +76,9 @@ diff -ruN DSDP5.8/Makefile DSDP5.8_patched/Makefile
 -	cd ../ ; \
 -	${RM} tmp
 +	${RM} objs/*.o
-diff -ruN DSDP5.8/make.include DSDP5.8_patched/make.include
---- DSDP5.8/make.include	2005-10-21 21:31:14.000000000 +0200
-+++ DSDP5.8_patched/make.include	2017-02-13 10:39:45.000000000 +0100
+diff --color -ruN DSDP5.8/make.include DSDP5.8_patched/make.include
+--- DSDP5.8/make.include	2005-10-21 21:31:14
++++ DSDP5.8_patched/make.include	2023-04-10 14:39:54
 @@ -1,87 +1,10 @@
 -# STEP 1: Set DSDPROOT in this file or comment out and make it an environment variable
 -#DSDPROOT	= /home/benson/dsdp/DSDP5.8
@@ -135,9 +133,9 @@ diff -ruN DSDP5.8/make.include DSDP5.8_patched/make.include
  CLINKER	= ${CC} ${OPTFLAGS}
 -#CLINKER	= ${CXX} ${OPTFLAGS} -static
 -#CLINKER	= link /out:dsdp5.exe
--
--#SH_LD = ${CC} -shared -W1,-soname,
  
+-#SH_LD = ${CC} -shared -W1,-soname,
+-
 -# STEP 5:
 -# Location of BLAS AND LAPACK libraries. 
 -# Not needed to compile library or matlab executable
@@ -205,10 +203,9 @@ diff -ruN DSDP5.8/make.include DSDP5.8_patched/make.include
  	@if [ ${DSDPROOT}foo = foo ] ; then \
  	  echo "*********************** ERROR **********************" ; \
  	  echo "Set the variable DSDPROOT " ; \
-Binary files DSDP5.8/src/.DS_Store and DSDP5.8_patched/src/.DS_Store differ
-diff -ruN DSDP5.8/src/sys/dsdploginfo.c DSDP5.8_patched/src/sys/dsdploginfo.c
---- DSDP5.8/src/sys/dsdploginfo.c	2005-10-21 21:31:15.000000000 +0200
-+++ DSDP5.8_patched/src/sys/dsdploginfo.c	2017-02-13 10:28:52.000000000 +0100
+diff --color -ruN DSDP5.8/src/sys/dsdploginfo.c DSDP5.8_patched/src/sys/dsdploginfo.c
+--- DSDP5.8/src/sys/dsdploginfo.c	2005-10-21 21:31:15
++++ DSDP5.8_patched/src/sys/dsdploginfo.c	2023-04-10 14:39:54
 @@ -6,7 +6,9 @@
  #include <stdarg.h>
  #include <sys/types.h>
diff --git a/.github/workflows/linux_build.yml b/.github/workflows/linux_build.yml
index 3a5c26f..2d8c04f 100644
--- a/.github/workflows/linux_build.yml
+++ b/.github/workflows/linux_build.yml
@@ -9,8 +9,8 @@ jobs:
 
     runs-on: ubuntu-latest
     env:
-      SUITESPARSE_VERSION: 5.10.1
-      SUITESPARSE_SHA256: acb4d1045f48a237e70294b950153e48dce5b5f9ca8190e86c2b8c54ce00a7ee
+      SUITESPARSE_VERSION: 5.13.0
+      SUITESPARSE_SHA256: 59c6ca2959623f0c69226cf9afb9a018d12a37fab3a8869db5f6d7f83b6b147d
       CVXOPT_BUILD_DSDP: 1
       CVXOPT_BUILD_FFTW: 1
       CVXOPT_BUILD_GLPK: 1
@@ -18,15 +18,18 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10']
-        # suitesparse: [src, lib]
-        suitesparse: [lib]
+        python-version: ['3.7','3.11']
+        suitesparse: [src, lib]
+        #suitesparse: [lib]
 
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout source    
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -34,7 +37,7 @@ jobs:
       run: |
         sudo apt-get install libopenblas-dev libsuitesparse-dev libdsdp-dev libfftw3-dev libglpk-dev libgsl0-dev
         python -m pip install --upgrade pip
-        pip install pytest pytest-cov coveralls wheel
+        pip install setuptools setuptools_scm build wheel pytest pytest-cov coveralls 
 
     - name: Get SuiteSparse source
       if: ${{ matrix.suitesparse == 'src' }}
@@ -47,9 +50,10 @@ jobs:
 
     - name: Build/install CVXOPT
       run: |
-        python setup.py build
-        pip install .
+        python -m build --wheel
+        pip install --no-index --find-links=${{github.workspace}}/dist cvxopt
 
     - name: Test with pytest
       run: |
-        pytest
+        python -c "from cvxopt import blas,lapack,amd,cholmod,umfpack,glpk,dsdp,gsl,fftw"
+        pytest --cov=cvxopt tests
diff --git a/.github/workflows/macos_build.yml b/.github/workflows/macos_build.yml
index 4710259..5e5fbc1 100644
--- a/.github/workflows/macos_build.yml
+++ b/.github/workflows/macos_build.yml
@@ -9,8 +9,11 @@ jobs:
 
     runs-on: macos-latest
     env:
-      SUITESPARSE_VERSION: 5.10.1
-      SUITESPARSE_SHA256: acb4d1045f48a237e70294b950153e48dce5b5f9ca8190e86c2b8c54ce00a7ee
+      CFLAGS: -target x86_64-apple-macos12
+      ARCHFLAGS: -arch x86_64
+      _PYTHON_HOST_PLATFORM: macosx-12.0-x86_64
+      SUITESPARSE_VERSION: 5.13.0
+      SUITESPARSE_SHA256: 59c6ca2959623f0c69226cf9afb9a018d12a37fab3a8869db5f6d7f83b6b147d
       DSDP_VERSION: 5.8
       DSDP_SHA256: 26aa624525a636de272c0b329e2dfd01a0d5b7827f1c1c76f393d71e37dead70
       CVXOPT_DSDP_LIB_DIR: /usr/local/lib
@@ -25,15 +28,18 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.9', '3.10']
+        python-version: ['3.9','3.11']
         # suitesparse: [src, lib]
         suitesparse: [lib]
 
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout source    
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -41,7 +47,7 @@ jobs:
       run: |
         brew install openblas suite-sparse glpk gsl fftw
         python -m pip install --upgrade pip
-        pip install pytest pytest-cov coveralls wheel
+        python -m pip install --upgrade setuptools setuptools_scm build wheel pytest pytest-cov coveralls 
 
     - name: Get SuiteSparse source
       if: ${{ matrix.suitesparse == 'src' }}
@@ -61,13 +67,14 @@ jobs:
         tar -xf DSDP${DSDP_VERSION}.tar.gz
         cd DSDP${DSDP_VERSION}
         patch -p1 < ${{github.workspace}}/.github/workflows/dsdp.patch
-        make PREFIX=/usr/local LAPACKBLAS="-L${CVXOPT_BLAS_LIB_DIR} -l${CVXOPT_LAPACK_LIB} -l${CVXOPT_BLAS_LIB}" IS_OSX=1 DSDPROOT=`pwd` install
+        make PREFIX=/usr/local ARCH_FLAGS="$ARCHFLAGS" LAPACKBLAS="-L${CVXOPT_BLAS_LIB_DIR} -l${CVXOPT_LAPACK_LIB} -l${CVXOPT_BLAS_LIB}" IS_OSX=1 DSDPROOT=`pwd` install
 
     - name: Build/install CVXOPT
       run: |
-        python setup.py build
-        pip install .
+        python -m build --wheel
+        python -m pip install --no-index --find-links=${{github.workspace}}/dist cvxopt
 
     - name: Test with pytest
       run: |
-        pytest
+        python -c "from cvxopt import blas,lapack,amd,cholmod,umfpack,glpk,gsl,fftw"
+        pytest --cov=cvxopt tests
diff --git a/.github/workflows/windows_build.yml b/.github/workflows/windows_build.yml
index 6253467..e10fd31 100644
--- a/.github/workflows/windows_build.yml
+++ b/.github/workflows/windows_build.yml
@@ -9,12 +9,10 @@ jobs:
     
     runs-on: windows-2019
     env:
-      SUITESPARSE_VERSION: 5.10.1
-      SUITESPARSE_SHA256: acb4d1045f48a237e70294b950153e48dce5b5f9ca8190e86c2b8c54ce00a7ee
-      OPENBLAS_VERSION: 0.3.10
+      SUITESPARSE_VERSION: 5.13.0
+      SUITESPARSE_SHA256: dad2d035136b927dead2427205c956f8e857825cec4e419e9a6eaa600aca730a
+      OPENBLAS_VERSION: 0.3.22
       CVXOPT_MSVC: 1
-      CVXOPT_BLAS_LIB: libopenblas
-      CVXOPT_LAPACK_LIB: libopenblas
       CVXOPT_BUILD_DSDP: 0
       CVXOPT_BUILD_FFTW: 0
       CVXOPT_BUILD_GLPK: 0
@@ -22,26 +20,32 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.9','3.10']
         suitesparse: [src]
-        architecture: [x64, x86]
+        ARCH: [x64]
+        python-version: ['3.8','3.11'] 
         include:
-        - architecture: x64
-          msvc_target: 64
-          plat-name: win-amd64
-          OPENBLAS_SHA256: a307629479260ebfed057a3fc466d2be83a2bb594739a99c06ec830173273135
-        - architecture: x86
-          msvc_target: 32
-          plat-name: win32
-          OPENBLAS_SHA256: 7eab2be38e4c79f0ce496e7cb3ae28be457aef1b21e70eb7e32147b479b7bb57
+        - ARCH: x64
+          MSVC_TARGET: 64
+          PLAT_NAME: win-amd64
+          OPENBLAS_SHA256: ff08774f0d33077c46b501abffc8ddf90a246c1d714ec8aedccd1de45286d566
+
+        # - ARCH: x86
+        #   MSVC_TARGET: 32
+        #   PLAT_NAME: win32
+        #   OPENBLAS_SHA256: 2eb2a21fc9eaa374132a491aa7f7b28840040e634075c86fb97fc277038e7c15
 
     steps:
-    - uses: actions/checkout@v2
+
+    - name: Checkout source
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
     - name: Setup Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-        architecture: ${{ matrix.architecture}}
+        architecture: ${{ matrix.ARCH}}
 
     - name: Setup msys2
       uses: msys2/setup-msys2@v2
@@ -52,46 +56,44 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest pytest-cov coveralls wheel
+        pip install setuptools setuptools_scm build wheel pytest pytest-cov coveralls 
 
-    - name: Get OpenBLAS
+    - name: Get OpenBLAS and copy to workspace
       shell: msys2 {0}
       run: |
-          wget https://github.com/xianyi/OpenBLAS/releases/download/v${OPENBLAS_VERSION}/OpenBLAS-${OPENBLAS_VERSION}-${{matrix.architecture}}.zip
+          wget https://github.com/xianyi/OpenBLAS/releases/download/v${OPENBLAS_VERSION}/OpenBLAS-${OPENBLAS_VERSION}-${{matrix.ARCH}}.zip
           wget https://raw.githubusercontent.com/xianyi/OpenBLAS/v${OPENBLAS_VERSION}/LICENSE -O LICENSE_OpenBLAS-${OPENBLAS_VERSION}
-          echo "${{matrix.OPENBLAS_SHA256}}  OpenBLAS-${OPENBLAS_VERSION}-${{matrix.architecture}}.zip" > OpenBLAS.sha256
+          echo "${{matrix.OPENBLAS_SHA256}}  OpenBLAS-${OPENBLAS_VERSION}-${{matrix.ARCH}}.zip" > OpenBLAS.sha256
           sha256sum -c OpenBLAS.sha256
+          mkdir src/python/.libs
           mkdir OpenBLAS
-          unzip OpenBLAS-${OPENBLAS_VERSION}-${{matrix.architecture}}.zip -d OpenBLAS/
-          echo "CVXOPT_BLAS_LIB_DIR=${{github.workspace}}\OpenBLAS\lib" >> $GITHUB_ENV
+          unzip OpenBLAS-${OPENBLAS_VERSION}-${{matrix.ARCH}}.zip -d OpenBLAS/
+          cp OpenBLAS/bin/libopenblas.dll src/python/.libs
+          cp OpenBLAS/lib/libopenblas.lib libopenblas.lib       
+          cp LICENSE_OpenBLAS-${OPENBLAS_VERSION} src/python  
+          echo "CVXOPT_BLAS_LIB_DIR=${{github.workspace}}" >> $GITHUB_ENV
+          echo "CVXOPT_BLAS_LIB=libopenblas" >> $GITHUB_ENV
+          echo "CVXOPT_LAPACK_LIB=libopenblas" >> $GITHUB_ENV
 
     - name: Get SuiteSparse source
       shell: msys2 {0}
       if: ${{ matrix.suitesparse == 'src' }}
       run: |
-        wget https://github.com/DrTimothyAldenDavis/SuiteSparse/archive/v${SUITESPARSE_VERSION}.tar.gz
-        echo "${SUITESPARSE_SHA256}  v${SUITESPARSE_VERSION}.tar.gz" > SuiteSparse.sha256
+        wget https://github.com/DrTimothyAldenDavis/SuiteSparse/archive/v${SUITESPARSE_VERSION}.zip
+        echo "${SUITESPARSE_SHA256}  v${SUITESPARSE_VERSION}.zip" > SuiteSparse.sha256
         sha256sum -c SuiteSparse.sha256
-        tar -xf v${SUITESPARSE_VERSION}.tar.gz
+        unzip v${SUITESPARSE_VERSION}.zip
         echo "CVXOPT_SUITESPARSE_SRC_DIR=${{github.workspace}}/SuiteSparse-${{env.SUITESPARSE_VERSION}}" >> $GITHUB_ENV
 
-    - name: Configure MSVC
-      shell: cmd
-      run: |
-        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars${{matrix.msvc_target}}.bat"
     - name: Build/install CVXOPT
       shell: cmd
       run: |
-        python setup.py build
-        SET build_dir=${{github.workspace}}\build\lib.${{matrix.plat-name}}-${{matrix.python-version}}\cvxopt
-        copy LICENSE_OpenBLAS-${OPENBLAS_VERSION} %build_dir%
-        mkdir %build_dir%\.lib
-        copy ${{github.workspace}}\OpenBLAS\bin\libopenblas.dll %build_dir%\.lib
-        python ${{github.workspace}}\.github\workflows\_add_bootstrap.py %build_dir%  
-        python setup.py bdist_wheel
-        pip install .
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars${{matrix.MSVC_TARGET}}.bat"
+        python -m build --wheel
+        pip install --no-index --find-links=${{github.workspace}}\dist cvxopt
 
-    - name: Test with pytest
+    - name: Test
       shell: cmd
       run: |
-        pytest
+        python -c "from cvxopt import blas,lapack,amd,cholmod,umfpack"
+        pytest --cov=cvxopt tests
diff --git a/INSTALL b/INSTALL
index 576286f..662493d 100644
--- a/INSTALL
+++ b/INSTALL
@@ -9,13 +9,13 @@ Installing via conda
 --------------------
 
 The `conda-forge <http://anaconda.org/conda-forge/cvxopt>`_ channel
-provides pre-built CVXOPT packages for Linux and macOS that can be
-installed using `conda <https://conda.io/docs/>`_::
+provides pre-built CVXOPT packages for Linux, macOS, and Windows that
+can be installed using `conda <https://conda.io/docs/>`_::
 
 	conda install -c conda-forge cvxopt
 
-These pre-built packages are linked against OpenBLAS and include the optional extensions
-GLPK, GSL, and FFTW.
+These pre-built packages are linked against OpenBLAS and include all  
+optional extensions (DSDP, FFTW, GLPK, and GSL).
 
 
 Installing via pip
@@ -28,129 +28,25 @@ using `pip <https://pip.pypa.io>`_::
 
 Wheels for Linux:
 
-* are available for Python 2.7, 3.3, 3.4, 3.5, and 3.6 (32 and 64 bit)
+* are available for Python 3.6+ (x86_64)
 * are linked against OpenBLAS
-* include all optional extensions (DSDP, GLPK, GSL, and FFTW)
+* include all optional extensions (DSDP, FFTW, GLPK, and GSL)
 
 Wheels for macOS:
 
-* are available for Python 2.7, 3.4, 3.5, and 3.6 (universal binaries)
+* are available for Python 3.6+ (x86_64 and arm64)
 * are linked against OpenBLAS
-* include all optional extensions (DSDP, GLPK, GSL, and FFTW)
+* include all optional extensions (DSDP, FFTW, GLPK, and GSL)
 
 Wheels for Windows:
 
-* are available for Python 2.7, 3.4, 3.5, and 3.6 (64 bit only)
-* are linked against MKL
-* Python 3.5+ wheels include the optional extension GLPK (wheels for Python 2.7 and 3.4 include none of the optional extensions)
+* are available for Python 3.8+ (x86_64)
+* are linked against OpenBLAS
+* include the optional extension GLPK 
 
 
 Building and installing from source
 ===================================
 
-Required and optional software
-------------------------------
-
-The package requires version 2.7 or 3.x of Python, and building from
-source requires core binaries and header files and libraries for Python.
-
-The installation requires BLAS and LAPACK. Using an architecture
-optimized implementation such as ATLAS, OpenBLAS, or MKL is recommended
-and gives a large performance improvement over reference implementations
-of the BLAS and LAPACK libraries.
-
-The installation also requires SuiteSparse. We recommend linking against
-a shared SuiteSparse library. It is also possible to build the required
-components of SuiteSparse when building CVXOPT, but this requires the
-SuiteSparse source which is no longer included with CVXOPT.
-
-The following software libraries are optional.
-
-* The GNU Scientific Library GSL <www.gnu.org/software/gsl>.
-
-* FFTW <www.fftw.org> is a C library for discrete Fourier transforms.
-
-* GLPK <www.gnu.org/software/glpk/glpk.html> is a linear programming
-  package.
-
-* MOSEK version 8 <www.mosek.com> is a commercial library of convex
-  optimization solvers.
-
-* DSDP5.8 <www-unix.mcs.anl.gov/DSDP> is a semidefinite programming solver.
-
-
-Customizing the setup script
-----------------------------
-
-If needed, the default compilation can be customized by editing setup.py or
-by defining some environment variables. The following variables in the setup
-script can be modified:
-
-* BLAS_LIB_DIR: the directory containing the LAPACK and BLAS libraries.
-
-* BUILD_GSL: set this variable to 1 if you would like to use the GSL
-  random number generators for constructing random matrices in CVXOPT.
-  If BULD_GSL is 0, the Python random number generators will be used
-  instead.
-* GSL_LIB_DIR: the directory containing libgsl.
-* GSL_INC_DIR: the directory containing the GSL header files.
-
-* BUILD_FFTW: set this variable to 1 to install the cvxopt.fftw module,
-  which is an interface to FFTW.
-* FFTW_LIB_DIR: the directory containing libfftw3.
-* FFTW_INC_DIR: the directory containing fftw.h.
-
-* BUILD_GLPK: set this variable to 1 to enable support for the linear
-  programming solver GLPK.
-* GLPK_LIB_DIR: the directory containing libglpk.
-* GLPK_INC_DIR: the directory containing glpk.h.
-
-* BUILD_DSDP: set this variable to 1 to enable support for the semidefinite
-  programming solver DSDP.
-* DSDP_LIB_DIR: the directory containing libdsdp.
-* DSDP_INC_DIR: the directory containing dsdp5.h.
-
-* SUITESPARSE_LIB_DIR: the directory containing SuiteSparse libraries.
-* SUITESPARSE_INC_DIR: the directory containing SuiteSparse header files.
-* SUITESPARSE_SRC_DIR: the directory containing SuiteSparse source. The
-  variables SUITESPARSE_LIB_DIR and SUITESPARSE_INC_DIR are ignored and
-  relevant parts of SuiteSparse are built from source when
-  SUITESPARSE_SRC_DIR is specified.
-
-* MSVC: set this variable to 1 if compiling with MSVC 14 or later
-
-Each of the variables can be overridden by specifying an environment variable
-with the prefix "CVXOPT_". For example, the following command installs CVXOPT
-locally with BUILD_FFTW=1:
-
-     CVXOPT_BUILD_FFTW=1 python setup.py install --user
-
-Support for the linear, second-order cone, and quadratic programming
-solvers in MOSEK is automatically enabled if both MOSEK and the MOSEK
-Python interface are installed.
-
-
-Installation
-------------
-
-CVXOPT can be installed globally (for all users on a UNIX system) using
-the command:
-
-    python setup.py install
-
-It can also be installed locally (for a single user) using the command:
-
-    python setup.py install --user
-
-To test that the installation was successful, run the included tests using
-
-     python -m unittest discover -s tests
-
-or alternatively, if `nose` is installed,
-
-     nosetests
-
-If Python does not issue an error message, installation was successful.
-
-Additional information can be found in the
-Python documentation <http://docs.python.org/install/index.html>.
+Please consult the CVXOPT website for information about how to build 
+and install CVXOPT from source <https://cvxopt.org/install/index.html>.
diff --git a/LICENSE b/LICENSE
index e772a48..ffbf739 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 CVXOPT version 1.3
 
-Copyright (c) 2012-2022 M. Andersen and L. Vandenberghe.
+Copyright (c) 2012-2023 M. Andersen and L. Vandenberghe.
 Copyright (c) 2010-2011 L. Vandenberghe.
 Copyright (c) 2004-2009 J. Dahl and L. Vandenberghe.
 
diff --git a/MANIFEST.in b/MANIFEST.in
index a8af5d7..54147b6 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,7 +1,6 @@
 include README.md
 include LICENSE
 include INSTALL
-include versioneer.py
 include src/python/_version.py
 recursive-include doc *
 recursive-include examples *
diff --git a/debian/changelog b/debian/changelog
index bb21fcc..110e550 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+cvxopt (1.3.1+dfsg-1) UNRELEASED; urgency=low
+
+  * New upstream release.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Sat, 29 Jul 2023 20:55:24 -0000
+
 cvxopt (1.3.0+dfsg-1) unstable; urgency=medium
 
   [ Debian Janitor ]
diff --git a/debian/patches/multiarch.diff b/debian/patches/multiarch.diff
index 18c1726..7e27829 100644
--- a/debian/patches/multiarch.diff
+++ b/debian/patches/multiarch.diff
@@ -4,9 +4,11 @@ Bug-Debian: https://bugs.debian.org/934382
 Forwarded: not-needed
 Last-Update: 2019-10-20
 
---- a/setup.py
-+++ b/setup.py
-@@ -58,9 +58,10 @@
+Index: cvxopt.git/setup.py
+===================================================================
+--- cvxopt.git.orig/setup.py
++++ cvxopt.git/setup.py
+@@ -57,9 +57,10 @@ if sys.platform.startswith("darwin"):
      SUITESPARSE_LIB_DIR = '/usr/local/lib'
      SUITESPARSE_INC_DIR = '/usr/local/include'
  else:
diff --git a/debian/patches/setup.diff b/debian/patches/setup.diff
index bb6324d..92f0bcf 100644
--- a/debian/patches/setup.diff
+++ b/debian/patches/setup.diff
@@ -4,9 +4,11 @@ Description: Take over old patch to new upstream version.
  Include all optional libraries
 Forwarded: not-needed
 
---- a/setup.py
-+++ b/setup.py
-@@ -17,7 +17,7 @@
+Index: cvxopt.git/setup.py
+===================================================================
+--- cvxopt.git.orig/setup.py
++++ cvxopt.git/setup.py
+@@ -16,7 +16,7 @@ BLAS_NOUNDERSCORES = False
  
  # Set to 1 if you are using the random number generators in the GNU
  # Scientific Library.
@@ -15,7 +17,7 @@ Forwarded: not-needed
  
  # Directory containing libgsl (used only when BUILD_GSL = 1).
  GSL_LIB_DIR = '/usr/lib'
-@@ -26,7 +26,7 @@
+@@ -25,7 +25,7 @@ GSL_LIB_DIR = '/usr/lib'
  GSL_INC_DIR = '/usr/include/gsl'
  
  # Set to 1 if you are installing the fftw module.
@@ -24,7 +26,7 @@ Forwarded: not-needed
  
  # Directory containing libfftw3 (used only when BUILD_FFTW = 1).
  FFTW_LIB_DIR = '/usr/lib'
-@@ -35,7 +35,7 @@
+@@ -34,7 +34,7 @@ FFTW_LIB_DIR = '/usr/lib'
  FFTW_INC_DIR = '/usr/include'
  
  # Set to 1 if you are installing the glpk module.
@@ -33,7 +35,7 @@ Forwarded: not-needed
  
  # Directory containing libglpk (used only when BUILD_GLPK = 1).
  GLPK_LIB_DIR = '/usr/lib'
-@@ -44,7 +44,7 @@
+@@ -43,7 +43,7 @@ GLPK_LIB_DIR = '/usr/lib'
  GLPK_INC_DIR = '/usr/include'
  
  # Set to 1 if you are installing the DSDP module.
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6648079..c018b74 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -40,15 +40,15 @@ master_doc = 'index'
 
 # General substitutions.
 project = "CVXOPT User's Guide"
-copyright = '2004-2022, M.S. Andersen, J. Dahl, L. Vandenberghe'
+copyright = '2004-2023, M.S. Andersen, J. Dahl, L. Vandenberghe'
 
 # The default replacements for |version| and |release|, also used in various
 # other places throughout the built documents.
 #
 # The short X.Y version.
-version = '1.3.0'
+version = '1.3.1'
 # The full version, including alpha/beta/rc tags.
-release = '1.3.0'
+release = '1.3.1'
 
 
 # There are two options for replacing |today|: either, you set today to some
diff --git a/doc/source/copyright.rst b/doc/source/copyright.rst
index e962415..f816c9c 100644
--- a/doc/source/copyright.rst
+++ b/doc/source/copyright.rst
@@ -5,7 +5,7 @@
 Copyright and License
 *********************
 
-| :raw-html:`&copy;` 2012-2022 M. Andersen and L. Vandenberghe.
+| :raw-html:`&copy;` 2012-2023 M. Andersen and L. Vandenberghe.
 | :raw-html:`&copy;` 2010-2011 L. Vandenberghe. 
 | :raw-html:`&copy;` 2004-2009 J. Dahl and L. Vandenberghe. 
 |
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 9616e31..f155007 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -4,12 +4,13 @@
 CVXOPT User's Guide
 ####################
 
-**Release 1.3.0 -- March 7, 2022**
+**Release 1.3.1 -- May 9, 2023**
 
 **Martin Andersen, Joachim Dahl, and Lieven Vandenberghe**
 
 .. toctree::
-
+    :maxdepth: 2
+    
     copyright.rst
     intro.rst
     matrices.rst
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..af5e51a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,9 @@
+[build-system]
+requires = ["setuptools>=45", "setuptools_scm[toml]>=6.2", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
+write_to = "src/python/_version.py"
+
+[cvxopt]
+dynamic = ["version"]
diff --git a/setup.cfg b/setup.cfg
index 67eb4ef..a408f37 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,14 +1,6 @@
 [metadata]
 description_file = README.md
 
-[versioneer]
-VCS = git
-style = pep440
-versionfile_source = src/python/_version.py
-versionfile_build = cvxopt/_version.py
-tag_prefix = 
-parentdir_prefix =
-
 [tool:pytest]
 minversion = 6.0
 addopts = -ra -q
diff --git a/setup.py b/setup.py
index ea94439..a01bb0f 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,6 @@
 from setuptools import setup, Extension
 from glob import glob
 import os, sys
-import versioneer
 
 # Modifiy this if BLAS and LAPACK libraries are not in /usr/lib.
 BLAS_LIB_DIR = '/usr/lib'
@@ -258,8 +257,6 @@ extmods += [base, blas, lapack, umfpack, cholmod, amd, misc_solvers]
 
 setup (name = 'cvxopt',
     description = 'Convex optimization package',
-    version=versioneer.get_version(),
-    cmdclass=versioneer.get_cmdclass(),
     long_description = '''
 CVXOPT is a free software package for convex optimization based on the
 Python programming language. It can be used with the interactive Python
@@ -271,12 +268,13 @@ library and on the strengths of Python as a high-level programming
 language.''',
     author = 'M. Andersen, J. Dahl, and L. Vandenberghe',
     author_email = 'martin.skovgaard.andersen@gmail.com, dahl.joachim@gmail.com, vandenbe@ee.ucla.edu',
-    url = 'http://cvxopt.org',
+    url = 'https://cvxopt.org',
     project_urls = {'Source': 'https://github.com/cvxopt/cvxopt'},
     license = 'GNU GPL version 3',
     ext_package = "cvxopt",
     ext_modules = extmods,
     package_dir = {"cvxopt": "src/python"},
+    package_data = {'': [".libs/*.dll", "LICENSE*"]},
     packages = ["cvxopt"],
     python_requires=PYTHON_REQUIRES,
     install_requires = INSTALL_REQUIRES,
diff --git a/src/C/amd.c b/src/C/amd.c
index 51f3a04..27720fd 100644
--- a/src/C/amd.c
+++ b/src/C/amd.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/base.c b/src/C/base.c
index 31b3fbf..5670432 100644
--- a/src/C/base.c
+++ b/src/C/base.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/blas.c b/src/C/blas.c
index 31c543d..acc6c19 100644
--- a/src/C/blas.c
+++ b/src/C/blas.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/cholmod.c b/src/C/cholmod.c
index dd72f68..7f62664 100644
--- a/src/C/cholmod.c
+++ b/src/C/cholmod.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/cvxopt.h b/src/C/cvxopt.h
index afbe165..04def0b 100644
--- a/src/C/cvxopt.h
+++ b/src/C/cvxopt.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/dense.c b/src/C/dense.c
index 0459619..ad35e0a 100644
--- a/src/C/dense.c
+++ b/src/C/dense.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/dsdp.c b/src/C/dsdp.c
index 93c726e..792ceee 100644
--- a/src/C/dsdp.c
+++ b/src/C/dsdp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/fftw.c b/src/C/fftw.c
index 0d174f2..84d3ed5 100644
--- a/src/C/fftw.c
+++ b/src/C/fftw.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/glpk.c b/src/C/glpk.c
index 7494d29..6a418b5 100644
--- a/src/C/glpk.c
+++ b/src/C/glpk.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/gsl.c b/src/C/gsl.c
index 4993f8c..25366d1 100644
--- a/src/C/gsl.c
+++ b/src/C/gsl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/lapack.c b/src/C/lapack.c
index 491008d..127b62f 100644
--- a/src/C/lapack.c
+++ b/src/C/lapack.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/misc.h b/src/C/misc.h
index c0243a7..25dd7ef 100644
--- a/src/C/misc.h
+++ b/src/C/misc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/misc_solvers.c b/src/C/misc_solvers.c
index f2a5907..3b01036 100644
--- a/src/C/misc_solvers.c
+++ b/src/C/misc_solvers.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/sparse.c b/src/C/sparse.c
index f87882a..6561017 100644
--- a/src/C/sparse.c
+++ b/src/C/sparse.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/C/umfpack.c b/src/C/umfpack.c
index 9df04ea..7d0ed9a 100644
--- a/src/C/umfpack.c
+++ b/src/C/umfpack.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+ * Copyright 2012-2023 M. Andersen and L. Vandenberghe.
  * Copyright 2010-2011 L. Vandenberghe.
  * Copyright 2004-2009 J. Dahl and L. Vandenberghe.
  *
diff --git a/src/python/__init__.py b/src/python/__init__.py
index 96db294..071b98c 100644
--- a/src/python/__init__.py
+++ b/src/python/__init__.py
@@ -11,7 +11,7 @@ library and on the strengths of Python as a high-level programming
 language.
 """ 
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
@@ -30,7 +30,7 @@ language.
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-__copyright__ = """Copyright (c) 2012-2022 M. Andersen and L. Vandenberghe.
+__copyright__ = """Copyright (c) 2012-2023 M. Andersen and L. Vandenberghe.
 Copyright (c) 2010-2011 L. Vandenberghe.
 Copyright (c) 2004-2009 J. Dahl and L. Vandenberghe."""
 
@@ -47,6 +47,13 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>."""
 
+import sys
+if sys.platform == 'win32':
+    import os
+    extra_dll_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), '.libs')  
+    if os.path.isdir(extra_dll_dir):  
+        os.add_dll_directory(extra_dll_dir)
+
 import cvxopt.base
 
 def copyright():
@@ -283,7 +290,10 @@ __all__ = [ 'blas', 'lapack', 'amd', 'umfpack', 'cholmod', 'solvers',
     'spdiag', 'sqrt', 'sin', 'cos', 'exp', 'log', 'min', 'max', 'mul', 
     'div', 'normal', 'uniform', 'setseed', 'getseed' ]
 
-from . import _version
-__version__ = _version.get_versions()['version']
-
+try:
+    from ._version import version as __version__
+    from ._version import version_tuple
+except ImportError:
+    __version__ = "unknown version"
+    version_tuple = (0, 0, "unknown version")
 
diff --git a/src/python/_version.py b/src/python/_version.py
deleted file mode 100644
index 2c72a32..0000000
--- a/src/python/_version.py
+++ /dev/null
@@ -1,650 +0,0 @@
-
-# This file helps to compute a version number in source trees obtained from
-# git-archive tarball (such as those provided by githubs download-from-tag
-# feature). Distribution tarballs (built by setup.py sdist) and build
-# directories (produced by setup.py build) will contain a much shorter file
-# that just contains the computed version number.
-
-# This file is released into the public domain. Generated by
-# versioneer-0.22.dev0 (https://github.com/python-versioneer/python-versioneer)
-
-"""Git implementation of _version.py."""
-
-import errno
-import os
-import re
-import subprocess
-import sys
-from typing import Callable, Dict
-
-
-def get_keywords():
-    """Get the keywords needed to look up the version information."""
-    # these strings will be replaced by git during git-archive.
-    # setup.py/versioneer.py will grep for the variable names, so they must
-    # each be defined on a line of their own. _version.py will just call
-    # get_keywords().
-    git_refnames = " (HEAD -> master, tag: 1.3.0)"
-    git_full = "f236615e5bd326daeb6cda511c31d86bcc354747"
-    git_date = "2022-03-07 22:58:44 +0100"
-    keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
-    return keywords
-
-
-class VersioneerConfig:
-    """Container for Versioneer configuration parameters."""
-
-
-def get_config():
-    """Create, populate and return the VersioneerConfig() object."""
-    # these strings are filled in when 'setup.py versioneer' creates
-    # _version.py
-    cfg = VersioneerConfig()
-    cfg.VCS = "git"
-    cfg.style = "pep440"
-    cfg.tag_prefix = ""
-    cfg.parentdir_prefix = ""
-    cfg.versionfile_source = "src/python/_version.py"
-    cfg.verbose = False
-    return cfg
-
-
-class NotThisMethod(Exception):
-    """Exception raised if a method is not valid for the current scenario."""
-
-
-LONG_VERSION_PY: Dict[str, str] = {}
-HANDLERS: Dict[str, Dict[str, Callable]] = {}
-
-
-def register_vcs_handler(vcs, method):  # decorator
-    """Create decorator to mark a method as the handler of a VCS."""
-    def decorate(f):
-        """Store f in HANDLERS[vcs][method]."""
-        if vcs not in HANDLERS:
-            HANDLERS[vcs] = {}
-        HANDLERS[vcs][method] = f
-        return f
-    return decorate
-
-
-def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
-                env=None):
-    """Call the given command(s)."""
-    assert isinstance(commands, list)
-    process = None
-
-    popen_kwargs = {}
-    if sys.platform == "win32":
-        # This hides the console window if pythonw.exe is used
-        startupinfo = subprocess.STARTUPINFO()
-        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
-        popen_kwargs["startupinfo"] = startupinfo
-
-    for command in commands:
-        try:
-            dispcmd = str([command] + args)
-            # remember shell=False, so use git.cmd on windows, not just git
-            process = subprocess.Popen([command] + args, cwd=cwd, env=env,
-                                       stdout=subprocess.PIPE,
-                                       stderr=(subprocess.PIPE if hide_stderr
-                                               else None), **popen_kwargs)
-            break
-        except OSError:
-            e = sys.exc_info()[1]
-            if e.errno == errno.ENOENT:
-                continue
-            if verbose:
-                print("unable to run %s" % dispcmd)
-                print(e)
-            return None, None
-    else:
-        if verbose:
-            print("unable to find command, tried %s" % (commands,))
-        return None, None
-    stdout = process.communicate()[0].strip().decode()
-    if process.returncode != 0:
-        if verbose:
-            print("unable to run %s (error)" % dispcmd)
-            print("stdout was %s" % stdout)
-        return None, process.returncode
-    return stdout, process.returncode
-
-
-def versions_from_parentdir(parentdir_prefix, root, verbose):
-    """Try to determine the version from the parent directory name.
-
-    Source tarballs conventionally unpack into a directory that includes both
-    the project name and a version string. We will also support searching up
-    two directory levels for an appropriately named parent directory
-    """
-    rootdirs = []
-
-    for _ in range(3):
-        dirname = os.path.basename(root)
-        if dirname.startswith(parentdir_prefix):
-            return {"version": dirname[len(parentdir_prefix):],
-                    "full-revisionid": None,
-                    "dirty": False, "error": None, "date": None}
-        rootdirs.append(root)
-        root = os.path.dirname(root)  # up a level
-
-    if verbose:
-        print("Tried directories %s but none started with prefix %s" %
-              (str(rootdirs), parentdir_prefix))
-    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
-
-
-@register_vcs_handler("git", "get_keywords")
-def git_get_keywords(versionfile_abs):
-    """Extract version information from the given file."""
-    # the code embedded in _version.py can just fetch the value of these
-    # keywords. When used from setup.py, we don't want to import _version.py,
-    # so we do it with a regexp instead. This function is not used from
-    # _version.py.
-    keywords = {}
-    try:
-        with open(versionfile_abs, "r") as fobj:
-            for line in fobj:
-                if line.strip().startswith("git_refnames ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["refnames"] = mo.group(1)
-                if line.strip().startswith("git_full ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["full"] = mo.group(1)
-                if line.strip().startswith("git_date ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["date"] = mo.group(1)
-    except OSError:
-        pass
-    return keywords
-
-
-@register_vcs_handler("git", "keywords")
-def git_versions_from_keywords(keywords, tag_prefix, verbose):
-    """Get version information from git keywords."""
-    if "refnames" not in keywords:
-        raise NotThisMethod("Short version file found")
-    date = keywords.get("date")
-    if date is not None:
-        # Use only the last line.  Previous lines may contain GPG signature
-        # information.
-        date = date.splitlines()[-1]
-
-        # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
-        # datestamp. However we prefer "%ci" (which expands to an "ISO-8601
-        # -like" string, which we must then edit to make compliant), because
-        # it's been around since git-1.5.3, and it's too difficult to
-        # discover which version we're using, or to work around using an
-        # older one.
-        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-    refnames = keywords["refnames"].strip()
-    if refnames.startswith("$Format"):
-        if verbose:
-            print("keywords are unexpanded, not using")
-        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
-    refs = {r.strip() for r in refnames.strip("()").split(",")}
-    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
-    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
-    TAG = "tag: "
-    tags = {r[len(TAG):] for r in refs if r.startswith(TAG)}
-    if not tags:
-        # Either we're using git < 1.8.3, or there really are no tags. We use
-        # a heuristic: assume all version tags have a digit. The old git %d
-        # expansion behaves like git log --decorate=short and strips out the
-        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
-        # between branches and tags. By ignoring refnames without digits, we
-        # filter out many common branch names like "release" and
-        # "stabilization", as well as "HEAD" and "master".
-        tags = {r for r in refs if re.search(r'\d', r)}
-        if verbose:
-            print("discarding '%s', no digits" % ",".join(refs - tags))
-    if verbose:
-        print("likely tags: %s" % ",".join(sorted(tags)))
-    for ref in sorted(tags):
-        # sorting will prefer e.g. "2.0" over "2.0rc1"
-        if ref.startswith(tag_prefix):
-            r = ref[len(tag_prefix):]
-            # Filter out refs that exactly match prefix or that don't start
-            # with a number once the prefix is stripped (mostly a concern
-            # when prefix is '')
-            if not re.match(r'\d', r):
-                continue
-            if verbose:
-                print("picking %s" % r)
-            return {"version": r,
-                    "full-revisionid": keywords["full"].strip(),
-                    "dirty": False, "error": None,
-                    "date": date}
-    # no suitable tags, so version is "0+unknown", but full hex is still there
-    if verbose:
-        print("no suitable tags, using unknown + full revision id")
-    return {"version": "0+unknown",
-            "full-revisionid": keywords["full"].strip(),
-            "dirty": False, "error": "no suitable tags", "date": None}
-
-
-@register_vcs_handler("git", "pieces_from_vcs")
-def git_pieces_from_vcs(tag_prefix, root, verbose, runner=run_command):
-    """Get version from 'git describe' in the root of the source tree.
-
-    This only gets called if the git-archive 'subst' keywords were *not*
-    expanded, and _version.py hasn't already been rewritten with a short
-    version string, meaning we're inside a checked out source tree.
-    """
-    GITS = ["git"]
-    if sys.platform == "win32":
-        GITS = ["git.cmd", "git.exe"]
-
-    _, rc = runner(GITS, ["rev-parse", "--git-dir"], cwd=root,
-                   hide_stderr=True)
-    if rc != 0:
-        if verbose:
-            print("Directory %s not under git control" % root)
-        raise NotThisMethod("'git rev-parse --git-dir' returned error")
-
-    MATCH_ARGS = ["--match", "%s*" % tag_prefix] if tag_prefix else []
-
-    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
-    # if there isn't one, this yields HEX[-dirty] (no NUM)
-    describe_out, rc = runner(GITS, ["describe", "--tags", "--dirty",
-                                     "--always", "--long", *MATCH_ARGS],
-                              cwd=root)
-    # --long was added in git-1.5.5
-    if describe_out is None:
-        raise NotThisMethod("'git describe' failed")
-    describe_out = describe_out.strip()
-    full_out, rc = runner(GITS, ["rev-parse", "HEAD"], cwd=root)
-    if full_out is None:
-        raise NotThisMethod("'git rev-parse' failed")
-    full_out = full_out.strip()
-
-    pieces = {}
-    pieces["long"] = full_out
-    pieces["short"] = full_out[:7]  # maybe improved later
-    pieces["error"] = None
-
-    branch_name, rc = runner(GITS, ["rev-parse", "--abbrev-ref", "HEAD"],
-                             cwd=root)
-    # --abbrev-ref was added in git-1.6.3
-    if rc != 0 or branch_name is None:
-        raise NotThisMethod("'git rev-parse --abbrev-ref' returned error")
-    branch_name = branch_name.strip()
-
-    if branch_name == "HEAD":
-        # If we aren't exactly on a branch, pick a branch which represents
-        # the current commit. If all else fails, we are on a branchless
-        # commit.
-        branches, rc = runner(GITS, ["branch", "--contains"], cwd=root)
-        # --contains was added in git-1.5.4
-        if rc != 0 or branches is None:
-            raise NotThisMethod("'git branch --contains' returned error")
-        branches = branches.split("\n")
-
-        # Remove the first line if we're running detached
-        if "(" in branches[0]:
-            branches.pop(0)
-
-        # Strip off the leading "* " from the list of branches.
-        branches = [branch[2:] for branch in branches]
-        if "master" in branches:
-            branch_name = "master"
-        elif not branches:
-            branch_name = None
-        else:
-            # Pick the first branch that is returned. Good or bad.
-            branch_name = branches[0]
-
-    pieces["branch"] = branch_name
-
-    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
-    # TAG might have hyphens.
-    git_describe = describe_out
-
-    # look for -dirty suffix
-    dirty = git_describe.endswith("-dirty")
-    pieces["dirty"] = dirty
-    if dirty:
-        git_describe = git_describe[:git_describe.rindex("-dirty")]
-
-    # now we have TAG-NUM-gHEX or HEX
-
-    if "-" in git_describe:
-        # TAG-NUM-gHEX
-        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
-        if not mo:
-            # unparsable. Maybe git-describe is misbehaving?
-            pieces["error"] = ("unable to parse git-describe output: '%s'"
-                               % describe_out)
-            return pieces
-
-        # tag
-        full_tag = mo.group(1)
-        if not full_tag.startswith(tag_prefix):
-            if verbose:
-                fmt = "tag '%s' doesn't start with prefix '%s'"
-                print(fmt % (full_tag, tag_prefix))
-            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
-                               % (full_tag, tag_prefix))
-            return pieces
-        pieces["closest-tag"] = full_tag[len(tag_prefix):]
-
-        # distance: number of commits since tag
-        pieces["distance"] = int(mo.group(2))
-
-        # commit: short hex revision ID
-        pieces["short"] = mo.group(3)
-
-    else:
-        # HEX: no tags
-        pieces["closest-tag"] = None
-        count_out, rc = runner(GITS, ["rev-list", "HEAD", "--count"], cwd=root)
-        pieces["distance"] = int(count_out)  # total number of commits
-
-    # commit date: see ISO-8601 comment in git_versions_from_keywords()
-    date = runner(GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip()
-    # Use only the last line.  Previous lines may contain GPG signature
-    # information.
-    date = date.splitlines()[-1]
-    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-
-    return pieces
-
-
-def plus_or_dot(pieces):
-    """Return a + if we don't already have one, else return a ."""
-    if "+" in pieces.get("closest-tag", ""):
-        return "."
-    return "+"
-
-
-def render_pep440(pieces):
-    """Build up version string, with post-release "local version identifier".
-
-    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
-    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
-
-    Exceptions:
-    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += plus_or_dot(pieces)
-            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0+untagged.%d.g%s" % (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_branch(pieces):
-    """TAG[[.dev0]+DISTANCE.gHEX[.dirty]] .
-
-    The ".dev0" means not master branch. Note that .dev0 sorts backwards
-    (a feature branch will appear "older" than the master branch).
-
-    Exceptions:
-    1: no tags. 0[.dev0]+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0"
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+untagged.%d.g%s" % (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def pep440_split_post(ver):
-    """Split pep440 version string at the post-release segment.
-
-    Returns the release segments before the post-release and the
-    post-release version number (or -1 if no post-release segment is present).
-    """
-    vc = str.split(ver, ".post")
-    return vc[0], int(vc[1] or 0) if len(vc) == 2 else None
-
-
-def render_pep440_pre(pieces):
-    """TAG[.postN.devDISTANCE] -- No -dirty.
-
-    Exceptions:
-    1: no tags. 0.post0.devDISTANCE
-    """
-    if pieces["closest-tag"]:
-        if pieces["distance"]:
-            # update the post release segment
-            tag_version, post_version = pep440_split_post(pieces["closest-tag"])
-            rendered = tag_version
-            if post_version is not None:
-                rendered += ".post%d.dev%d" % (post_version+1, pieces["distance"])
-            else:
-                rendered += ".post0.dev%d" % (pieces["distance"])
-        else:
-            # no commits, use the tag as the version
-            rendered = pieces["closest-tag"]
-    else:
-        # exception #1
-        rendered = "0.post0.dev%d" % pieces["distance"]
-    return rendered
-
-
-def render_pep440_post(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX] .
-
-    The ".dev0" means dirty. Note that .dev0 sorts backwards
-    (a dirty tree will appear "older" than the corresponding clean one),
-    but you shouldn't be releasing software with -dirty anyways.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%s" % pieces["short"]
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-        rendered += "+g%s" % pieces["short"]
-    return rendered
-
-
-def render_pep440_post_branch(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX[.dirty]] .
-
-    The ".dev0" means not master branch.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]+gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%s" % pieces["short"]
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+g%s" % pieces["short"]
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_old(pieces):
-    """TAG[.postDISTANCE[.dev0]] .
-
-    The ".dev0" means dirty.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-    return rendered
-
-
-def render_git_describe(pieces):
-    """TAG[-DISTANCE-gHEX][-dirty].
-
-    Like 'git describe --tags --dirty --always'.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"]:
-            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render_git_describe_long(pieces):
-    """TAG-DISTANCE-gHEX[-dirty].
-
-    Like 'git describe --tags --dirty --always -long'.
-    The distance/hash is unconditional.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render(pieces, style):
-    """Render the given version pieces into the requested style."""
-    if pieces["error"]:
-        return {"version": "unknown",
-                "full-revisionid": pieces.get("long"),
-                "dirty": None,
-                "error": pieces["error"],
-                "date": None}
-
-    if not style or style == "default":
-        style = "pep440"  # the default
-
-    if style == "pep440":
-        rendered = render_pep440(pieces)
-    elif style == "pep440-branch":
-        rendered = render_pep440_branch(pieces)
-    elif style == "pep440-pre":
-        rendered = render_pep440_pre(pieces)
-    elif style == "pep440-post":
-        rendered = render_pep440_post(pieces)
-    elif style == "pep440-post-branch":
-        rendered = render_pep440_post_branch(pieces)
-    elif style == "pep440-old":
-        rendered = render_pep440_old(pieces)
-    elif style == "git-describe":
-        rendered = render_git_describe(pieces)
-    elif style == "git-describe-long":
-        rendered = render_git_describe_long(pieces)
-    else:
-        raise ValueError("unknown style '%s'" % style)
-
-    return {"version": rendered, "full-revisionid": pieces["long"],
-            "dirty": pieces["dirty"], "error": None,
-            "date": pieces.get("date")}
-
-
-def get_versions():
-    """Get version information or return default if unable to do so."""
-    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
-    # __file__, we can work backwards from there to the root. Some
-    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
-    # case we can only use expanded keywords.
-
-    cfg = get_config()
-    verbose = cfg.verbose
-
-    try:
-        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
-                                          verbose)
-    except NotThisMethod:
-        pass
-
-    try:
-        root = os.path.realpath(__file__)
-        # versionfile_source is the relative path from the top of the source
-        # tree (where the .git directory might live) to this file. Invert
-        # this to find the root from __file__.
-        for _ in cfg.versionfile_source.split('/'):
-            root = os.path.dirname(root)
-    except NameError:
-        return {"version": "0+unknown", "full-revisionid": None,
-                "dirty": None,
-                "error": "unable to find root of source tree",
-                "date": None}
-
-    try:
-        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
-        return render(pieces, cfg.style)
-    except NotThisMethod:
-        pass
-
-    try:
-        if cfg.parentdir_prefix:
-            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
-    except NotThisMethod:
-        pass
-
-    return {"version": "0+unknown", "full-revisionid": None,
-            "dirty": None,
-            "error": "unable to compute version", "date": None}
diff --git a/src/python/coneprog.py b/src/python/coneprog.py
index 0fdb456..0682526 100644
--- a/src/python/coneprog.py
+++ b/src/python/coneprog.py
@@ -2,7 +2,7 @@
 Solver for linear and quadratic cone programs.
 """
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 #
@@ -153,7 +153,7 @@ def conelp(c, G, h, dims = None, A = None, b = None, primalstart = None,
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -237,7 +237,7 @@ def conelp(c, G, h, dims = None, A = None, b = None, primalstart = None,
         - 'primal infeasibility ': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -1580,7 +1580,7 @@ def coneqp(P, q, G = None, h = None, dims = None, A = None, b = None,
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -2620,7 +2620,7 @@ def lp(c, G, h, A = None, b = None, kktsolver = None, solver = None, primalstart
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -2709,7 +2709,7 @@ def lp(c, G, h, A = None, b = None, kktsolver = None, solver = None, primalstart
         - 'primal infeasibility ': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -3108,7 +3108,7 @@ def socp(c, Gl = None, hl = None, Gq = None, hq = None, A = None, b = None,
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -3206,7 +3206,7 @@ def socp(c, Gl = None, hl = None, Gq = None, hq = None, A = None, b = None,
         - 'primal infeasibility ': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -3668,7 +3668,7 @@ def sdp(c, Gl = None, hl = None, Gs = None, hs = None, A = None, b = None,
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -3766,7 +3766,7 @@ def sdp(c, Gl = None, hl = None, Gs = None, hs = None, A = None, b = None,
         - 'primal infeasibility ': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
@@ -4229,7 +4229,7 @@ def qp(P, q, G = None, h = None, A = None, b = None, solver = None,
         - 'primal infeasibility': the residual in the primal constraints,
           defined as the maximum of the residual in the inequalities
 
-              || G*x + s + h || / max(1, ||h||)
+              || G*x + s - h || / max(1, ||h||)
 
           and the residual in the equalities
 
diff --git a/src/python/cvxprog.py b/src/python/cvxprog.py
index 4e24a64..b4a9086 100644
--- a/src/python/cvxprog.py
+++ b/src/python/cvxprog.py
@@ -6,7 +6,7 @@ for quadratic and geometric programming.  Also includes an interface
 to the quadratic programming solver from MOSEK.
 """
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/src/python/info.py b/src/python/info.py
index 7296908..2e534b3 100644
--- a/src/python/info.py
+++ b/src/python/info.py
@@ -1,4 +1,4 @@
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/src/python/misc.py b/src/python/misc.py
index 08f8303..33b6e14 100644
--- a/src/python/misc.py
+++ b/src/python/misc.py
@@ -1,4 +1,4 @@
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/src/python/modeling.py b/src/python/modeling.py
index 95b3d68..1c61084 100644
--- a/src/python/modeling.py
+++ b/src/python/modeling.py
@@ -5,7 +5,7 @@ Routines for specifying and solving convex optimization problems with
 piecewise-linear objective and constraint functions.
 """
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/src/python/msk.py b/src/python/msk.py
index 6fcf95c..8ad4349 100644
--- a/src/python/msk.py
+++ b/src/python/msk.py
@@ -2,7 +2,7 @@
 CVXOPT interface for MOSEK 8
 """
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 #
diff --git a/src/python/printing.py b/src/python/printing.py
index 7ab05d4..b3c6521 100644
--- a/src/python/printing.py
+++ b/src/python/printing.py
@@ -1,4 +1,4 @@
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/src/python/solvers.py b/src/python/solvers.py
index d4a185c..ff6ce05 100644
--- a/src/python/solvers.py
+++ b/src/python/solvers.py
@@ -13,7 +13,7 @@ socp:     solves second-order cone programs.
 options:  dictionary with customizable algorithm parameters.
 """
 
-# Copyright 2012-2022 M. Andersen and L. Vandenberghe.
+# Copyright 2012-2023 M. Andersen and L. Vandenberghe.
 # Copyright 2010-2011 L. Vandenberghe.
 # Copyright 2004-2009 J. Dahl and L. Vandenberghe.
 # 
diff --git a/versioneer.py b/versioneer.py
deleted file mode 100644
index 414cb9d..0000000
--- a/versioneer.py
+++ /dev/null
@@ -1,2124 +0,0 @@
-
-# Version: 0.22.dev0
-
-"""The Versioneer - like a rocketeer, but for versions.
-
-The Versioneer
-==============
-
-* like a rocketeer, but for versions!
-* https://github.com/python-versioneer/python-versioneer
-* Brian Warner
-* License: Public Domain
-* Compatible with: Python 3.6, 3.7, 3.8, 3.9, 3.10 and pypy3
-* [![Latest Version][pypi-image]][pypi-url]
-* [![Build Status][travis-image]][travis-url]
-
-This is a tool for managing a recorded version number in distutils/setuptools-based
-python projects. The goal is to remove the tedious and error-prone "update
-the embedded version string" step from your release process. Making a new
-release should be as easy as recording a new tag in your version-control
-system, and maybe making new tarballs.
-
-
-## Quick Install
-
-* `pip install versioneer` to somewhere in your $PATH
-* add a `[versioneer]` section to your setup.cfg (see [Install](INSTALL.md))
-* run `versioneer install` in your source tree, commit the results
-* Verify version information with `python setup.py version`
-
-## Version Identifiers
-
-Source trees come from a variety of places:
-
-* a version-control system checkout (mostly used by developers)
-* a nightly tarball, produced by build automation
-* a snapshot tarball, produced by a web-based VCS browser, like github's
-  "tarball from tag" feature
-* a release tarball, produced by "setup.py sdist", distributed through PyPI
-
-Within each source tree, the version identifier (either a string or a number,
-this tool is format-agnostic) can come from a variety of places:
-
-* ask the VCS tool itself, e.g. "git describe" (for checkouts), which knows
-  about recent "tags" and an absolute revision-id
-* the name of the directory into which the tarball was unpacked
-* an expanded VCS keyword ($Id$, etc)
-* a `_version.py` created by some earlier build step
-
-For released software, the version identifier is closely related to a VCS
-tag. Some projects use tag names that include more than just the version
-string (e.g. "myproject-1.2" instead of just "1.2"), in which case the tool
-needs to strip the tag prefix to extract the version identifier. For
-unreleased software (between tags), the version identifier should provide
-enough information to help developers recreate the same tree, while also
-giving them an idea of roughly how old the tree is (after version 1.2, before
-version 1.3). Many VCS systems can report a description that captures this,
-for example `git describe --tags --dirty --always` reports things like
-"0.7-1-g574ab98-dirty" to indicate that the checkout is one revision past the
-0.7 tag, has a unique revision id of "574ab98", and is "dirty" (it has
-uncommitted changes).
-
-The version identifier is used for multiple purposes:
-
-* to allow the module to self-identify its version: `myproject.__version__`
-* to choose a name and prefix for a 'setup.py sdist' tarball
-
-## Theory of Operation
-
-Versioneer works by adding a special `_version.py` file into your source
-tree, where your `__init__.py` can import it. This `_version.py` knows how to
-dynamically ask the VCS tool for version information at import time.
-
-`_version.py` also contains `$Revision$` markers, and the installation
-process marks `_version.py` to have this marker rewritten with a tag name
-during the `git archive` command. As a result, generated tarballs will
-contain enough information to get the proper version.
-
-To allow `setup.py` to compute a version too, a `versioneer.py` is added to
-the top level of your source tree, next to `setup.py` and the `setup.cfg`
-that configures it. This overrides several distutils/setuptools commands to
-compute the version when invoked, and changes `setup.py build` and `setup.py
-sdist` to replace `_version.py` with a small static file that contains just
-the generated version data.
-
-## Installation
-
-See [INSTALL.md](./INSTALL.md) for detailed installation instructions.
-
-## Version-String Flavors
-
-Code which uses Versioneer can learn about its version string at runtime by
-importing `_version` from your main `__init__.py` file and running the
-`get_versions()` function. From the "outside" (e.g. in `setup.py`), you can
-import the top-level `versioneer.py` and run `get_versions()`.
-
-Both functions return a dictionary with different flavors of version
-information:
-
-* `['version']`: A condensed version string, rendered using the selected
-  style. This is the most commonly used value for the project's version
-  string. The default "pep440" style yields strings like `0.11`,
-  `0.11+2.g1076c97`, or `0.11+2.g1076c97.dirty`. See the "Styles" section
-  below for alternative styles.
-
-* `['full-revisionid']`: detailed revision identifier. For Git, this is the
-  full SHA1 commit id, e.g. "1076c978a8d3cfc70f408fe5974aa6c092c949ac".
-
-* `['date']`: Date and time of the latest `HEAD` commit. For Git, it is the
-  commit date in ISO 8601 format. This will be None if the date is not
-  available.
-
-* `['dirty']`: a boolean, True if the tree has uncommitted changes. Note that
-  this is only accurate if run in a VCS checkout, otherwise it is likely to
-  be False or None
-
-* `['error']`: if the version string could not be computed, this will be set
-  to a string describing the problem, otherwise it will be None. It may be
-  useful to throw an exception in setup.py if this is set, to avoid e.g.
-  creating tarballs with a version string of "unknown".
-
-Some variants are more useful than others. Including `full-revisionid` in a
-bug report should allow developers to reconstruct the exact code being tested
-(or indicate the presence of local changes that should be shared with the
-developers). `version` is suitable for display in an "about" box or a CLI
-`--version` output: it can be easily compared against release notes and lists
-of bugs fixed in various releases.
-
-The installer adds the following text to your `__init__.py` to place a basic
-version in `YOURPROJECT.__version__`:
-
-    from ._version import get_versions
-    __version__ = get_versions()['version']
-    del get_versions
-
-## Styles
-
-The setup.cfg `style=` configuration controls how the VCS information is
-rendered into a version string.
-
-The default style, "pep440", produces a PEP440-compliant string, equal to the
-un-prefixed tag name for actual releases, and containing an additional "local
-version" section with more detail for in-between builds. For Git, this is
-TAG[+DISTANCE.gHEX[.dirty]] , using information from `git describe --tags
---dirty --always`. For example "0.11+2.g1076c97.dirty" indicates that the
-tree is like the "1076c97" commit but has uncommitted changes (".dirty"), and
-that this commit is two revisions ("+2") beyond the "0.11" tag. For released
-software (exactly equal to a known tag), the identifier will only contain the
-stripped tag, e.g. "0.11".
-
-Other styles are available. See [details.md](details.md) in the Versioneer
-source tree for descriptions.
-
-## Debugging
-
-Versioneer tries to avoid fatal errors: if something goes wrong, it will tend
-to return a version of "0+unknown". To investigate the problem, run `setup.py
-version`, which will run the version-lookup code in a verbose mode, and will
-display the full contents of `get_versions()` (including the `error` string,
-which may help identify what went wrong).
-
-## Known Limitations
-
-Some situations are known to cause problems for Versioneer. This details the
-most significant ones. More can be found on Github
-[issues page](https://github.com/python-versioneer/python-versioneer/issues).
-
-### Subprojects
-
-Versioneer has limited support for source trees in which `setup.py` is not in
-the root directory (e.g. `setup.py` and `.git/` are *not* siblings). The are
-two common reasons why `setup.py` might not be in the root:
-
-* Source trees which contain multiple subprojects, such as
-  [Buildbot](https://github.com/buildbot/buildbot), which contains both
-  "master" and "slave" subprojects, each with their own `setup.py`,
-  `setup.cfg`, and `tox.ini`. Projects like these produce multiple PyPI
-  distributions (and upload multiple independently-installable tarballs).
-* Source trees whose main purpose is to contain a C library, but which also
-  provide bindings to Python (and perhaps other languages) in subdirectories.
-
-Versioneer will look for `.git` in parent directories, and most operations
-should get the right version string. However `pip` and `setuptools` have bugs
-and implementation details which frequently cause `pip install .` from a
-subproject directory to fail to find a correct version string (so it usually
-defaults to `0+unknown`).
-
-`pip install --editable .` should work correctly. `setup.py install` might
-work too.
-
-Pip-8.1.1 is known to have this problem, but hopefully it will get fixed in
-some later version.
-
-[Bug #38](https://github.com/python-versioneer/python-versioneer/issues/38) is tracking
-this issue. The discussion in
-[PR #61](https://github.com/python-versioneer/python-versioneer/pull/61) describes the
-issue from the Versioneer side in more detail.
-[pip PR#3176](https://github.com/pypa/pip/pull/3176) and
-[pip PR#3615](https://github.com/pypa/pip/pull/3615) contain work to improve
-pip to let Versioneer work correctly.
-
-Versioneer-0.16 and earlier only looked for a `.git` directory next to the
-`setup.cfg`, so subprojects were completely unsupported with those releases.
-
-### Editable installs with setuptools <= 18.5
-
-`setup.py develop` and `pip install --editable .` allow you to install a
-project into a virtualenv once, then continue editing the source code (and
-test) without re-installing after every change.
-
-"Entry-point scripts" (`setup(entry_points={"console_scripts": ..})`) are a
-convenient way to specify executable scripts that should be installed along
-with the python package.
-
-These both work as expected when using modern setuptools. When using
-setuptools-18.5 or earlier, however, certain operations will cause
-`pkg_resources.DistributionNotFound` errors when running the entrypoint
-script, which must be resolved by re-installing the package. This happens
-when the install happens with one version, then the egg_info data is
-regenerated while a different version is checked out. Many setup.py commands
-cause egg_info to be rebuilt (including `sdist`, `wheel`, and installing into
-a different virtualenv), so this can be surprising.
-
-[Bug #83](https://github.com/python-versioneer/python-versioneer/issues/83) describes
-this one, but upgrading to a newer version of setuptools should probably
-resolve it.
-
-
-## Updating Versioneer
-
-To upgrade your project to a new release of Versioneer, do the following:
-
-* install the new Versioneer (`pip install -U versioneer` or equivalent)
-* edit `setup.cfg`, if necessary, to include any new configuration settings
-  indicated by the release notes. See [UPGRADING](./UPGRADING.md) for details.
-* re-run `versioneer install` in your source tree, to replace
-  `SRC/_version.py`
-* commit any changed files
-
-## Future Directions
-
-This tool is designed to make it easily extended to other version-control
-systems: all VCS-specific components are in separate directories like
-src/git/ . The top-level `versioneer.py` script is assembled from these
-components by running make-versioneer.py . In the future, make-versioneer.py
-will take a VCS name as an argument, and will construct a version of
-`versioneer.py` that is specific to the given VCS. It might also take the
-configuration arguments that are currently provided manually during
-installation by editing setup.py . Alternatively, it might go the other
-direction and include code from all supported VCS systems, reducing the
-number of intermediate scripts.
-
-## Similar projects
-
-* [setuptools_scm](https://github.com/pypa/setuptools_scm/) - a non-vendored build-time
-  dependency
-* [minver](https://github.com/jbweston/miniver) - a lightweight reimplementation of
-  versioneer
-* [versioningit](https://github.com/jwodder/versioningit) - a PEP 518-based setuptools
-  plugin
-
-## License
-
-To make Versioneer easier to embed, all its code is dedicated to the public
-domain. The `_version.py` that it creates is also in the public domain.
-Specifically, both are released under the Creative Commons "Public Domain
-Dedication" license (CC0-1.0), as described in
-https://creativecommons.org/publicdomain/zero/1.0/ .
-
-[pypi-image]: https://img.shields.io/pypi/v/versioneer.svg
-[pypi-url]: https://pypi.python.org/pypi/versioneer/
-[travis-image]:
-https://img.shields.io/travis/com/python-versioneer/python-versioneer.svg
-[travis-url]: https://travis-ci.com/github/python-versioneer/python-versioneer
-
-"""
-# pylint:disable=invalid-name,import-outside-toplevel,missing-function-docstring
-# pylint:disable=missing-class-docstring,too-many-branches,too-many-statements
-# pylint:disable=raise-missing-from,too-many-lines,too-many-locals,import-error
-# pylint:disable=too-few-public-methods,redefined-outer-name,consider-using-with
-# pylint:disable=attribute-defined-outside-init,too-many-arguments
-
-import configparser
-import errno
-import json
-import os
-import re
-import subprocess
-import sys
-from typing import Callable, Dict
-
-
-class VersioneerConfig:
-    """Container for Versioneer configuration parameters."""
-
-
-def get_root():
-    """Get the project root directory.
-
-    We require that all commands are run from the project root, i.e. the
-    directory that contains setup.py, setup.cfg, and versioneer.py .
-    """
-    root = os.path.realpath(os.path.abspath(os.getcwd()))
-    setup_py = os.path.join(root, "setup.py")
-    versioneer_py = os.path.join(root, "versioneer.py")
-    if not (os.path.exists(setup_py) or os.path.exists(versioneer_py)):
-        # allow 'python path/to/setup.py COMMAND'
-        root = os.path.dirname(os.path.realpath(os.path.abspath(sys.argv[0])))
-        setup_py = os.path.join(root, "setup.py")
-        versioneer_py = os.path.join(root, "versioneer.py")
-    if not (os.path.exists(setup_py) or os.path.exists(versioneer_py)):
-        err = ("Versioneer was unable to run the project root directory. "
-               "Versioneer requires setup.py to be executed from "
-               "its immediate directory (like 'python setup.py COMMAND'), "
-               "or in a way that lets it use sys.argv[0] to find the root "
-               "(like 'python path/to/setup.py COMMAND').")
-        raise VersioneerBadRootError(err)
-    try:
-        # Certain runtime workflows (setup.py install/develop in a setuptools
-        # tree) execute all dependencies in a single python process, so
-        # "versioneer" may be imported multiple times, and python's shared
-        # module-import table will cache the first one. So we can't use
-        # os.path.dirname(__file__), as that will find whichever
-        # versioneer.py was first imported, even in later projects.
-        my_path = os.path.realpath(os.path.abspath(__file__))
-        me_dir = os.path.normcase(os.path.splitext(my_path)[0])
-        vsr_dir = os.path.normcase(os.path.splitext(versioneer_py)[0])
-        if me_dir != vsr_dir:
-            print("Warning: build in %s is using versioneer.py from %s"
-                  % (os.path.dirname(my_path), versioneer_py))
-    except NameError:
-        pass
-    return root
-
-
-def get_config_from_root(root):
-    """Read the project setup.cfg file to determine Versioneer config."""
-    # This might raise OSError (if setup.cfg is missing), or
-    # configparser.NoSectionError (if it lacks a [versioneer] section), or
-    # configparser.NoOptionError (if it lacks "VCS="). See the docstring at
-    # the top of versioneer.py for instructions on writing your setup.cfg .
-    setup_cfg = os.path.join(root, "setup.cfg")
-    parser = configparser.ConfigParser()
-    with open(setup_cfg, "r") as cfg_file:
-        parser.read_file(cfg_file)
-    VCS = parser.get("versioneer", "VCS")  # mandatory
-
-    # Dict-like interface for non-mandatory entries
-    section = parser["versioneer"]
-
-    cfg = VersioneerConfig()
-    cfg.VCS = VCS
-    cfg.style = section.get("style", "")
-    cfg.versionfile_source = section.get("versionfile_source")
-    cfg.versionfile_build = section.get("versionfile_build")
-    cfg.tag_prefix = section.get("tag_prefix")
-    if cfg.tag_prefix in ("''", '""'):
-        cfg.tag_prefix = ""
-    cfg.parentdir_prefix = section.get("parentdir_prefix")
-    cfg.verbose = section.get("verbose")
-    return cfg
-
-
-class NotThisMethod(Exception):
-    """Exception raised if a method is not valid for the current scenario."""
-
-
-# these dictionaries contain VCS-specific tools
-LONG_VERSION_PY: Dict[str, str] = {}
-HANDLERS: Dict[str, Dict[str, Callable]] = {}
-
-
-def register_vcs_handler(vcs, method):  # decorator
-    """Create decorator to mark a method as the handler of a VCS."""
-    def decorate(f):
-        """Store f in HANDLERS[vcs][method]."""
-        HANDLERS.setdefault(vcs, {})[method] = f
-        return f
-    return decorate
-
-
-def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
-                env=None):
-    """Call the given command(s)."""
-    assert isinstance(commands, list)
-    process = None
-
-    popen_kwargs = {}
-    if sys.platform == "win32":
-        # This hides the console window if pythonw.exe is used
-        startupinfo = subprocess.STARTUPINFO()
-        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
-        popen_kwargs["startupinfo"] = startupinfo
-
-    for command in commands:
-        try:
-            dispcmd = str([command] + args)
-            # remember shell=False, so use git.cmd on windows, not just git
-            process = subprocess.Popen([command] + args, cwd=cwd, env=env,
-                                       stdout=subprocess.PIPE,
-                                       stderr=(subprocess.PIPE if hide_stderr
-                                               else None), **popen_kwargs)
-            break
-        except OSError:
-            e = sys.exc_info()[1]
-            if e.errno == errno.ENOENT:
-                continue
-            if verbose:
-                print("unable to run %s" % dispcmd)
-                print(e)
-            return None, None
-    else:
-        if verbose:
-            print("unable to find command, tried %s" % (commands,))
-        return None, None
-    stdout = process.communicate()[0].strip().decode()
-    if process.returncode != 0:
-        if verbose:
-            print("unable to run %s (error)" % dispcmd)
-            print("stdout was %s" % stdout)
-        return None, process.returncode
-    return stdout, process.returncode
-
-
-LONG_VERSION_PY['git'] = r'''
-# This file helps to compute a version number in source trees obtained from
-# git-archive tarball (such as those provided by githubs download-from-tag
-# feature). Distribution tarballs (built by setup.py sdist) and build
-# directories (produced by setup.py build) will contain a much shorter file
-# that just contains the computed version number.
-
-# This file is released into the public domain. Generated by
-# versioneer-0.22.dev0 (https://github.com/python-versioneer/python-versioneer)
-
-"""Git implementation of _version.py."""
-
-import errno
-import os
-import re
-import subprocess
-import sys
-from typing import Callable, Dict
-
-
-def get_keywords():
-    """Get the keywords needed to look up the version information."""
-    # these strings will be replaced by git during git-archive.
-    # setup.py/versioneer.py will grep for the variable names, so they must
-    # each be defined on a line of their own. _version.py will just call
-    # get_keywords().
-    git_refnames = "%(DOLLAR)sFormat:%%d%(DOLLAR)s"
-    git_full = "%(DOLLAR)sFormat:%%H%(DOLLAR)s"
-    git_date = "%(DOLLAR)sFormat:%%ci%(DOLLAR)s"
-    keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
-    return keywords
-
-
-class VersioneerConfig:
-    """Container for Versioneer configuration parameters."""
-
-
-def get_config():
-    """Create, populate and return the VersioneerConfig() object."""
-    # these strings are filled in when 'setup.py versioneer' creates
-    # _version.py
-    cfg = VersioneerConfig()
-    cfg.VCS = "git"
-    cfg.style = "%(STYLE)s"
-    cfg.tag_prefix = "%(TAG_PREFIX)s"
-    cfg.parentdir_prefix = "%(PARENTDIR_PREFIX)s"
-    cfg.versionfile_source = "%(VERSIONFILE_SOURCE)s"
-    cfg.verbose = False
-    return cfg
-
-
-class NotThisMethod(Exception):
-    """Exception raised if a method is not valid for the current scenario."""
-
-
-LONG_VERSION_PY: Dict[str, str] = {}
-HANDLERS: Dict[str, Dict[str, Callable]] = {}
-
-
-def register_vcs_handler(vcs, method):  # decorator
-    """Create decorator to mark a method as the handler of a VCS."""
-    def decorate(f):
-        """Store f in HANDLERS[vcs][method]."""
-        if vcs not in HANDLERS:
-            HANDLERS[vcs] = {}
-        HANDLERS[vcs][method] = f
-        return f
-    return decorate
-
-
-def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
-                env=None):
-    """Call the given command(s)."""
-    assert isinstance(commands, list)
-    process = None
-
-    popen_kwargs = {}
-    if sys.platform == "win32":
-        # This hides the console window if pythonw.exe is used
-        startupinfo = subprocess.STARTUPINFO()
-        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
-        popen_kwargs["startupinfo"] = startupinfo
-
-    for command in commands:
-        try:
-            dispcmd = str([command] + args)
-            # remember shell=False, so use git.cmd on windows, not just git
-            process = subprocess.Popen([command] + args, cwd=cwd, env=env,
-                                       stdout=subprocess.PIPE,
-                                       stderr=(subprocess.PIPE if hide_stderr
-                                               else None), **popen_kwargs)
-            break
-        except OSError:
-            e = sys.exc_info()[1]
-            if e.errno == errno.ENOENT:
-                continue
-            if verbose:
-                print("unable to run %%s" %% dispcmd)
-                print(e)
-            return None, None
-    else:
-        if verbose:
-            print("unable to find command, tried %%s" %% (commands,))
-        return None, None
-    stdout = process.communicate()[0].strip().decode()
-    if process.returncode != 0:
-        if verbose:
-            print("unable to run %%s (error)" %% dispcmd)
-            print("stdout was %%s" %% stdout)
-        return None, process.returncode
-    return stdout, process.returncode
-
-
-def versions_from_parentdir(parentdir_prefix, root, verbose):
-    """Try to determine the version from the parent directory name.
-
-    Source tarballs conventionally unpack into a directory that includes both
-    the project name and a version string. We will also support searching up
-    two directory levels for an appropriately named parent directory
-    """
-    rootdirs = []
-
-    for _ in range(3):
-        dirname = os.path.basename(root)
-        if dirname.startswith(parentdir_prefix):
-            return {"version": dirname[len(parentdir_prefix):],
-                    "full-revisionid": None,
-                    "dirty": False, "error": None, "date": None}
-        rootdirs.append(root)
-        root = os.path.dirname(root)  # up a level
-
-    if verbose:
-        print("Tried directories %%s but none started with prefix %%s" %%
-              (str(rootdirs), parentdir_prefix))
-    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
-
-
-@register_vcs_handler("git", "get_keywords")
-def git_get_keywords(versionfile_abs):
-    """Extract version information from the given file."""
-    # the code embedded in _version.py can just fetch the value of these
-    # keywords. When used from setup.py, we don't want to import _version.py,
-    # so we do it with a regexp instead. This function is not used from
-    # _version.py.
-    keywords = {}
-    try:
-        with open(versionfile_abs, "r") as fobj:
-            for line in fobj:
-                if line.strip().startswith("git_refnames ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["refnames"] = mo.group(1)
-                if line.strip().startswith("git_full ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["full"] = mo.group(1)
-                if line.strip().startswith("git_date ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["date"] = mo.group(1)
-    except OSError:
-        pass
-    return keywords
-
-
-@register_vcs_handler("git", "keywords")
-def git_versions_from_keywords(keywords, tag_prefix, verbose):
-    """Get version information from git keywords."""
-    if "refnames" not in keywords:
-        raise NotThisMethod("Short version file found")
-    date = keywords.get("date")
-    if date is not None:
-        # Use only the last line.  Previous lines may contain GPG signature
-        # information.
-        date = date.splitlines()[-1]
-
-        # git-2.2.0 added "%%cI", which expands to an ISO-8601 -compliant
-        # datestamp. However we prefer "%%ci" (which expands to an "ISO-8601
-        # -like" string, which we must then edit to make compliant), because
-        # it's been around since git-1.5.3, and it's too difficult to
-        # discover which version we're using, or to work around using an
-        # older one.
-        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-    refnames = keywords["refnames"].strip()
-    if refnames.startswith("$Format"):
-        if verbose:
-            print("keywords are unexpanded, not using")
-        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
-    refs = {r.strip() for r in refnames.strip("()").split(",")}
-    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
-    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
-    TAG = "tag: "
-    tags = {r[len(TAG):] for r in refs if r.startswith(TAG)}
-    if not tags:
-        # Either we're using git < 1.8.3, or there really are no tags. We use
-        # a heuristic: assume all version tags have a digit. The old git %%d
-        # expansion behaves like git log --decorate=short and strips out the
-        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
-        # between branches and tags. By ignoring refnames without digits, we
-        # filter out many common branch names like "release" and
-        # "stabilization", as well as "HEAD" and "master".
-        tags = {r for r in refs if re.search(r'\d', r)}
-        if verbose:
-            print("discarding '%%s', no digits" %% ",".join(refs - tags))
-    if verbose:
-        print("likely tags: %%s" %% ",".join(sorted(tags)))
-    for ref in sorted(tags):
-        # sorting will prefer e.g. "2.0" over "2.0rc1"
-        if ref.startswith(tag_prefix):
-            r = ref[len(tag_prefix):]
-            # Filter out refs that exactly match prefix or that don't start
-            # with a number once the prefix is stripped (mostly a concern
-            # when prefix is '')
-            if not re.match(r'\d', r):
-                continue
-            if verbose:
-                print("picking %%s" %% r)
-            return {"version": r,
-                    "full-revisionid": keywords["full"].strip(),
-                    "dirty": False, "error": None,
-                    "date": date}
-    # no suitable tags, so version is "0+unknown", but full hex is still there
-    if verbose:
-        print("no suitable tags, using unknown + full revision id")
-    return {"version": "0+unknown",
-            "full-revisionid": keywords["full"].strip(),
-            "dirty": False, "error": "no suitable tags", "date": None}
-
-
-@register_vcs_handler("git", "pieces_from_vcs")
-def git_pieces_from_vcs(tag_prefix, root, verbose, runner=run_command):
-    """Get version from 'git describe' in the root of the source tree.
-
-    This only gets called if the git-archive 'subst' keywords were *not*
-    expanded, and _version.py hasn't already been rewritten with a short
-    version string, meaning we're inside a checked out source tree.
-    """
-    GITS = ["git"]
-    if sys.platform == "win32":
-        GITS = ["git.cmd", "git.exe"]
-
-    _, rc = runner(GITS, ["rev-parse", "--git-dir"], cwd=root,
-                   hide_stderr=True)
-    if rc != 0:
-        if verbose:
-            print("Directory %%s not under git control" %% root)
-        raise NotThisMethod("'git rev-parse --git-dir' returned error")
-
-    MATCH_ARGS = ["--match", "%%s*" %% tag_prefix] if tag_prefix else []
-
-    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
-    # if there isn't one, this yields HEX[-dirty] (no NUM)
-    describe_out, rc = runner(GITS, ["describe", "--tags", "--dirty",
-                                     "--always", "--long", *MATCH_ARGS],
-                              cwd=root)
-    # --long was added in git-1.5.5
-    if describe_out is None:
-        raise NotThisMethod("'git describe' failed")
-    describe_out = describe_out.strip()
-    full_out, rc = runner(GITS, ["rev-parse", "HEAD"], cwd=root)
-    if full_out is None:
-        raise NotThisMethod("'git rev-parse' failed")
-    full_out = full_out.strip()
-
-    pieces = {}
-    pieces["long"] = full_out
-    pieces["short"] = full_out[:7]  # maybe improved later
-    pieces["error"] = None
-
-    branch_name, rc = runner(GITS, ["rev-parse", "--abbrev-ref", "HEAD"],
-                             cwd=root)
-    # --abbrev-ref was added in git-1.6.3
-    if rc != 0 or branch_name is None:
-        raise NotThisMethod("'git rev-parse --abbrev-ref' returned error")
-    branch_name = branch_name.strip()
-
-    if branch_name == "HEAD":
-        # If we aren't exactly on a branch, pick a branch which represents
-        # the current commit. If all else fails, we are on a branchless
-        # commit.
-        branches, rc = runner(GITS, ["branch", "--contains"], cwd=root)
-        # --contains was added in git-1.5.4
-        if rc != 0 or branches is None:
-            raise NotThisMethod("'git branch --contains' returned error")
-        branches = branches.split("\n")
-
-        # Remove the first line if we're running detached
-        if "(" in branches[0]:
-            branches.pop(0)
-
-        # Strip off the leading "* " from the list of branches.
-        branches = [branch[2:] for branch in branches]
-        if "master" in branches:
-            branch_name = "master"
-        elif not branches:
-            branch_name = None
-        else:
-            # Pick the first branch that is returned. Good or bad.
-            branch_name = branches[0]
-
-    pieces["branch"] = branch_name
-
-    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
-    # TAG might have hyphens.
-    git_describe = describe_out
-
-    # look for -dirty suffix
-    dirty = git_describe.endswith("-dirty")
-    pieces["dirty"] = dirty
-    if dirty:
-        git_describe = git_describe[:git_describe.rindex("-dirty")]
-
-    # now we have TAG-NUM-gHEX or HEX
-
-    if "-" in git_describe:
-        # TAG-NUM-gHEX
-        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
-        if not mo:
-            # unparsable. Maybe git-describe is misbehaving?
-            pieces["error"] = ("unable to parse git-describe output: '%%s'"
-                               %% describe_out)
-            return pieces
-
-        # tag
-        full_tag = mo.group(1)
-        if not full_tag.startswith(tag_prefix):
-            if verbose:
-                fmt = "tag '%%s' doesn't start with prefix '%%s'"
-                print(fmt %% (full_tag, tag_prefix))
-            pieces["error"] = ("tag '%%s' doesn't start with prefix '%%s'"
-                               %% (full_tag, tag_prefix))
-            return pieces
-        pieces["closest-tag"] = full_tag[len(tag_prefix):]
-
-        # distance: number of commits since tag
-        pieces["distance"] = int(mo.group(2))
-
-        # commit: short hex revision ID
-        pieces["short"] = mo.group(3)
-
-    else:
-        # HEX: no tags
-        pieces["closest-tag"] = None
-        count_out, rc = runner(GITS, ["rev-list", "HEAD", "--count"], cwd=root)
-        pieces["distance"] = int(count_out)  # total number of commits
-
-    # commit date: see ISO-8601 comment in git_versions_from_keywords()
-    date = runner(GITS, ["show", "-s", "--format=%%ci", "HEAD"], cwd=root)[0].strip()
-    # Use only the last line.  Previous lines may contain GPG signature
-    # information.
-    date = date.splitlines()[-1]
-    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-
-    return pieces
-
-
-def plus_or_dot(pieces):
-    """Return a + if we don't already have one, else return a ."""
-    if "+" in pieces.get("closest-tag", ""):
-        return "."
-    return "+"
-
-
-def render_pep440(pieces):
-    """Build up version string, with post-release "local version identifier".
-
-    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
-    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
-
-    Exceptions:
-    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += plus_or_dot(pieces)
-            rendered += "%%d.g%%s" %% (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0+untagged.%%d.g%%s" %% (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_branch(pieces):
-    """TAG[[.dev0]+DISTANCE.gHEX[.dirty]] .
-
-    The ".dev0" means not master branch. Note that .dev0 sorts backwards
-    (a feature branch will appear "older" than the master branch).
-
-    Exceptions:
-    1: no tags. 0[.dev0]+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "%%d.g%%s" %% (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0"
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+untagged.%%d.g%%s" %% (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def pep440_split_post(ver):
-    """Split pep440 version string at the post-release segment.
-
-    Returns the release segments before the post-release and the
-    post-release version number (or -1 if no post-release segment is present).
-    """
-    vc = str.split(ver, ".post")
-    return vc[0], int(vc[1] or 0) if len(vc) == 2 else None
-
-
-def render_pep440_pre(pieces):
-    """TAG[.postN.devDISTANCE] -- No -dirty.
-
-    Exceptions:
-    1: no tags. 0.post0.devDISTANCE
-    """
-    if pieces["closest-tag"]:
-        if pieces["distance"]:
-            # update the post release segment
-            tag_version, post_version = pep440_split_post(pieces["closest-tag"])
-            rendered = tag_version
-            if post_version is not None:
-                rendered += ".post%%d.dev%%d" %% (post_version+1, pieces["distance"])
-            else:
-                rendered += ".post0.dev%%d" %% (pieces["distance"])
-        else:
-            # no commits, use the tag as the version
-            rendered = pieces["closest-tag"]
-    else:
-        # exception #1
-        rendered = "0.post0.dev%%d" %% pieces["distance"]
-    return rendered
-
-
-def render_pep440_post(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX] .
-
-    The ".dev0" means dirty. Note that .dev0 sorts backwards
-    (a dirty tree will appear "older" than the corresponding clean one),
-    but you shouldn't be releasing software with -dirty anyways.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%%d" %% pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%%s" %% pieces["short"]
-    else:
-        # exception #1
-        rendered = "0.post%%d" %% pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-        rendered += "+g%%s" %% pieces["short"]
-    return rendered
-
-
-def render_pep440_post_branch(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX[.dirty]] .
-
-    The ".dev0" means not master branch.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]+gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%%d" %% pieces["distance"]
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%%s" %% pieces["short"]
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0.post%%d" %% pieces["distance"]
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+g%%s" %% pieces["short"]
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_old(pieces):
-    """TAG[.postDISTANCE[.dev0]] .
-
-    The ".dev0" means dirty.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%%d" %% pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-    else:
-        # exception #1
-        rendered = "0.post%%d" %% pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-    return rendered
-
-
-def render_git_describe(pieces):
-    """TAG[-DISTANCE-gHEX][-dirty].
-
-    Like 'git describe --tags --dirty --always'.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"]:
-            rendered += "-%%d-g%%s" %% (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render_git_describe_long(pieces):
-    """TAG-DISTANCE-gHEX[-dirty].
-
-    Like 'git describe --tags --dirty --always -long'.
-    The distance/hash is unconditional.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        rendered += "-%%d-g%%s" %% (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render(pieces, style):
-    """Render the given version pieces into the requested style."""
-    if pieces["error"]:
-        return {"version": "unknown",
-                "full-revisionid": pieces.get("long"),
-                "dirty": None,
-                "error": pieces["error"],
-                "date": None}
-
-    if not style or style == "default":
-        style = "pep440"  # the default
-
-    if style == "pep440":
-        rendered = render_pep440(pieces)
-    elif style == "pep440-branch":
-        rendered = render_pep440_branch(pieces)
-    elif style == "pep440-pre":
-        rendered = render_pep440_pre(pieces)
-    elif style == "pep440-post":
-        rendered = render_pep440_post(pieces)
-    elif style == "pep440-post-branch":
-        rendered = render_pep440_post_branch(pieces)
-    elif style == "pep440-old":
-        rendered = render_pep440_old(pieces)
-    elif style == "git-describe":
-        rendered = render_git_describe(pieces)
-    elif style == "git-describe-long":
-        rendered = render_git_describe_long(pieces)
-    else:
-        raise ValueError("unknown style '%%s'" %% style)
-
-    return {"version": rendered, "full-revisionid": pieces["long"],
-            "dirty": pieces["dirty"], "error": None,
-            "date": pieces.get("date")}
-
-
-def get_versions():
-    """Get version information or return default if unable to do so."""
-    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
-    # __file__, we can work backwards from there to the root. Some
-    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
-    # case we can only use expanded keywords.
-
-    cfg = get_config()
-    verbose = cfg.verbose
-
-    try:
-        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
-                                          verbose)
-    except NotThisMethod:
-        pass
-
-    try:
-        root = os.path.realpath(__file__)
-        # versionfile_source is the relative path from the top of the source
-        # tree (where the .git directory might live) to this file. Invert
-        # this to find the root from __file__.
-        for _ in cfg.versionfile_source.split('/'):
-            root = os.path.dirname(root)
-    except NameError:
-        return {"version": "0+unknown", "full-revisionid": None,
-                "dirty": None,
-                "error": "unable to find root of source tree",
-                "date": None}
-
-    try:
-        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
-        return render(pieces, cfg.style)
-    except NotThisMethod:
-        pass
-
-    try:
-        if cfg.parentdir_prefix:
-            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
-    except NotThisMethod:
-        pass
-
-    return {"version": "0+unknown", "full-revisionid": None,
-            "dirty": None,
-            "error": "unable to compute version", "date": None}
-'''
-
-
-@register_vcs_handler("git", "get_keywords")
-def git_get_keywords(versionfile_abs):
-    """Extract version information from the given file."""
-    # the code embedded in _version.py can just fetch the value of these
-    # keywords. When used from setup.py, we don't want to import _version.py,
-    # so we do it with a regexp instead. This function is not used from
-    # _version.py.
-    keywords = {}
-    try:
-        with open(versionfile_abs, "r") as fobj:
-            for line in fobj:
-                if line.strip().startswith("git_refnames ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["refnames"] = mo.group(1)
-                if line.strip().startswith("git_full ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["full"] = mo.group(1)
-                if line.strip().startswith("git_date ="):
-                    mo = re.search(r'=\s*"(.*)"', line)
-                    if mo:
-                        keywords["date"] = mo.group(1)
-    except OSError:
-        pass
-    return keywords
-
-
-@register_vcs_handler("git", "keywords")
-def git_versions_from_keywords(keywords, tag_prefix, verbose):
-    """Get version information from git keywords."""
-    if "refnames" not in keywords:
-        raise NotThisMethod("Short version file found")
-    date = keywords.get("date")
-    if date is not None:
-        # Use only the last line.  Previous lines may contain GPG signature
-        # information.
-        date = date.splitlines()[-1]
-
-        # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
-        # datestamp. However we prefer "%ci" (which expands to an "ISO-8601
-        # -like" string, which we must then edit to make compliant), because
-        # it's been around since git-1.5.3, and it's too difficult to
-        # discover which version we're using, or to work around using an
-        # older one.
-        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-    refnames = keywords["refnames"].strip()
-    if refnames.startswith("$Format"):
-        if verbose:
-            print("keywords are unexpanded, not using")
-        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
-    refs = {r.strip() for r in refnames.strip("()").split(",")}
-    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
-    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
-    TAG = "tag: "
-    tags = {r[len(TAG):] for r in refs if r.startswith(TAG)}
-    if not tags:
-        # Either we're using git < 1.8.3, or there really are no tags. We use
-        # a heuristic: assume all version tags have a digit. The old git %d
-        # expansion behaves like git log --decorate=short and strips out the
-        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
-        # between branches and tags. By ignoring refnames without digits, we
-        # filter out many common branch names like "release" and
-        # "stabilization", as well as "HEAD" and "master".
-        tags = {r for r in refs if re.search(r'\d', r)}
-        if verbose:
-            print("discarding '%s', no digits" % ",".join(refs - tags))
-    if verbose:
-        print("likely tags: %s" % ",".join(sorted(tags)))
-    for ref in sorted(tags):
-        # sorting will prefer e.g. "2.0" over "2.0rc1"
-        if ref.startswith(tag_prefix):
-            r = ref[len(tag_prefix):]
-            # Filter out refs that exactly match prefix or that don't start
-            # with a number once the prefix is stripped (mostly a concern
-            # when prefix is '')
-            if not re.match(r'\d', r):
-                continue
-            if verbose:
-                print("picking %s" % r)
-            return {"version": r,
-                    "full-revisionid": keywords["full"].strip(),
-                    "dirty": False, "error": None,
-                    "date": date}
-    # no suitable tags, so version is "0+unknown", but full hex is still there
-    if verbose:
-        print("no suitable tags, using unknown + full revision id")
-    return {"version": "0+unknown",
-            "full-revisionid": keywords["full"].strip(),
-            "dirty": False, "error": "no suitable tags", "date": None}
-
-
-@register_vcs_handler("git", "pieces_from_vcs")
-def git_pieces_from_vcs(tag_prefix, root, verbose, runner=run_command):
-    """Get version from 'git describe' in the root of the source tree.
-
-    This only gets called if the git-archive 'subst' keywords were *not*
-    expanded, and _version.py hasn't already been rewritten with a short
-    version string, meaning we're inside a checked out source tree.
-    """
-    GITS = ["git"]
-    if sys.platform == "win32":
-        GITS = ["git.cmd", "git.exe"]
-
-    _, rc = runner(GITS, ["rev-parse", "--git-dir"], cwd=root,
-                   hide_stderr=True)
-    if rc != 0:
-        if verbose:
-            print("Directory %s not under git control" % root)
-        raise NotThisMethod("'git rev-parse --git-dir' returned error")
-
-    MATCH_ARGS = ["--match", "%s*" % tag_prefix] if tag_prefix else []
-
-    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
-    # if there isn't one, this yields HEX[-dirty] (no NUM)
-    describe_out, rc = runner(GITS, ["describe", "--tags", "--dirty",
-                                     "--always", "--long", *MATCH_ARGS],
-                              cwd=root)
-    # --long was added in git-1.5.5
-    if describe_out is None:
-        raise NotThisMethod("'git describe' failed")
-    describe_out = describe_out.strip()
-    full_out, rc = runner(GITS, ["rev-parse", "HEAD"], cwd=root)
-    if full_out is None:
-        raise NotThisMethod("'git rev-parse' failed")
-    full_out = full_out.strip()
-
-    pieces = {}
-    pieces["long"] = full_out
-    pieces["short"] = full_out[:7]  # maybe improved later
-    pieces["error"] = None
-
-    branch_name, rc = runner(GITS, ["rev-parse", "--abbrev-ref", "HEAD"],
-                             cwd=root)
-    # --abbrev-ref was added in git-1.6.3
-    if rc != 0 or branch_name is None:
-        raise NotThisMethod("'git rev-parse --abbrev-ref' returned error")
-    branch_name = branch_name.strip()
-
-    if branch_name == "HEAD":
-        # If we aren't exactly on a branch, pick a branch which represents
-        # the current commit. If all else fails, we are on a branchless
-        # commit.
-        branches, rc = runner(GITS, ["branch", "--contains"], cwd=root)
-        # --contains was added in git-1.5.4
-        if rc != 0 or branches is None:
-            raise NotThisMethod("'git branch --contains' returned error")
-        branches = branches.split("\n")
-
-        # Remove the first line if we're running detached
-        if "(" in branches[0]:
-            branches.pop(0)
-
-        # Strip off the leading "* " from the list of branches.
-        branches = [branch[2:] for branch in branches]
-        if "master" in branches:
-            branch_name = "master"
-        elif not branches:
-            branch_name = None
-        else:
-            # Pick the first branch that is returned. Good or bad.
-            branch_name = branches[0]
-
-    pieces["branch"] = branch_name
-
-    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
-    # TAG might have hyphens.
-    git_describe = describe_out
-
-    # look for -dirty suffix
-    dirty = git_describe.endswith("-dirty")
-    pieces["dirty"] = dirty
-    if dirty:
-        git_describe = git_describe[:git_describe.rindex("-dirty")]
-
-    # now we have TAG-NUM-gHEX or HEX
-
-    if "-" in git_describe:
-        # TAG-NUM-gHEX
-        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
-        if not mo:
-            # unparsable. Maybe git-describe is misbehaving?
-            pieces["error"] = ("unable to parse git-describe output: '%s'"
-                               % describe_out)
-            return pieces
-
-        # tag
-        full_tag = mo.group(1)
-        if not full_tag.startswith(tag_prefix):
-            if verbose:
-                fmt = "tag '%s' doesn't start with prefix '%s'"
-                print(fmt % (full_tag, tag_prefix))
-            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
-                               % (full_tag, tag_prefix))
-            return pieces
-        pieces["closest-tag"] = full_tag[len(tag_prefix):]
-
-        # distance: number of commits since tag
-        pieces["distance"] = int(mo.group(2))
-
-        # commit: short hex revision ID
-        pieces["short"] = mo.group(3)
-
-    else:
-        # HEX: no tags
-        pieces["closest-tag"] = None
-        count_out, rc = runner(GITS, ["rev-list", "HEAD", "--count"], cwd=root)
-        pieces["distance"] = int(count_out)  # total number of commits
-
-    # commit date: see ISO-8601 comment in git_versions_from_keywords()
-    date = runner(GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip()
-    # Use only the last line.  Previous lines may contain GPG signature
-    # information.
-    date = date.splitlines()[-1]
-    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
-
-    return pieces
-
-
-def do_vcs_install(manifest_in, versionfile_source, ipy):
-    """Git-specific installation logic for Versioneer.
-
-    For Git, this means creating/changing .gitattributes to mark _version.py
-    for export-subst keyword substitution.
-    """
-    GITS = ["git"]
-    if sys.platform == "win32":
-        GITS = ["git.cmd", "git.exe"]
-    files = [manifest_in, versionfile_source]
-    if ipy:
-        files.append(ipy)
-    try:
-        my_path = __file__
-        if my_path.endswith(".pyc") or my_path.endswith(".pyo"):
-            my_path = os.path.splitext(my_path)[0] + ".py"
-        versioneer_file = os.path.relpath(my_path)
-    except NameError:
-        versioneer_file = "versioneer.py"
-    files.append(versioneer_file)
-    present = False
-    try:
-        with open(".gitattributes", "r") as fobj:
-            for line in fobj:
-                if line.strip().startswith(versionfile_source):
-                    if "export-subst" in line.strip().split()[1:]:
-                        present = True
-                        break
-    except OSError:
-        pass
-    if not present:
-        with open(".gitattributes", "a+") as fobj:
-            fobj.write(f"{versionfile_source} export-subst\n")
-        files.append(".gitattributes")
-    run_command(GITS, ["add", "--"] + files)
-
-
-def versions_from_parentdir(parentdir_prefix, root, verbose):
-    """Try to determine the version from the parent directory name.
-
-    Source tarballs conventionally unpack into a directory that includes both
-    the project name and a version string. We will also support searching up
-    two directory levels for an appropriately named parent directory
-    """
-    rootdirs = []
-
-    for _ in range(3):
-        dirname = os.path.basename(root)
-        if dirname.startswith(parentdir_prefix):
-            return {"version": dirname[len(parentdir_prefix):],
-                    "full-revisionid": None,
-                    "dirty": False, "error": None, "date": None}
-        rootdirs.append(root)
-        root = os.path.dirname(root)  # up a level
-
-    if verbose:
-        print("Tried directories %s but none started with prefix %s" %
-              (str(rootdirs), parentdir_prefix))
-    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
-
-
-SHORT_VERSION_PY = """
-# This file was generated by 'versioneer.py' (0.22.dev0) from
-# revision-control system data, or from the parent directory name of an
-# unpacked source archive. Distribution tarballs contain a pre-generated copy
-# of this file.
-
-import json
-
-version_json = '''
-%s
-'''  # END VERSION_JSON
-
-
-def get_versions():
-    return json.loads(version_json)
-"""
-
-
-def versions_from_file(filename):
-    """Try to determine the version from _version.py if present."""
-    try:
-        with open(filename) as f:
-            contents = f.read()
-    except OSError:
-        raise NotThisMethod("unable to read _version.py")
-    mo = re.search(r"version_json = '''\n(.*)'''  # END VERSION_JSON",
-                   contents, re.M | re.S)
-    if not mo:
-        mo = re.search(r"version_json = '''\r\n(.*)'''  # END VERSION_JSON",
-                       contents, re.M | re.S)
-    if not mo:
-        raise NotThisMethod("no version_json in _version.py")
-    return json.loads(mo.group(1))
-
-
-def write_to_version_file(filename, versions):
-    """Write the given version number to the given _version.py file."""
-    os.unlink(filename)
-    contents = json.dumps(versions, sort_keys=True,
-                          indent=1, separators=(",", ": "))
-    with open(filename, "w") as f:
-        f.write(SHORT_VERSION_PY % contents)
-
-    print("set %s to '%s'" % (filename, versions["version"]))
-
-
-def plus_or_dot(pieces):
-    """Return a + if we don't already have one, else return a ."""
-    if "+" in pieces.get("closest-tag", ""):
-        return "."
-    return "+"
-
-
-def render_pep440(pieces):
-    """Build up version string, with post-release "local version identifier".
-
-    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
-    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
-
-    Exceptions:
-    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += plus_or_dot(pieces)
-            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0+untagged.%d.g%s" % (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_branch(pieces):
-    """TAG[[.dev0]+DISTANCE.gHEX[.dirty]] .
-
-    The ".dev0" means not master branch. Note that .dev0 sorts backwards
-    (a feature branch will appear "older" than the master branch).
-
-    Exceptions:
-    1: no tags. 0[.dev0]+untagged.DISTANCE.gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0"
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+untagged.%d.g%s" % (pieces["distance"],
-                                          pieces["short"])
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def pep440_split_post(ver):
-    """Split pep440 version string at the post-release segment.
-
-    Returns the release segments before the post-release and the
-    post-release version number (or -1 if no post-release segment is present).
-    """
-    vc = str.split(ver, ".post")
-    return vc[0], int(vc[1] or 0) if len(vc) == 2 else None
-
-
-def render_pep440_pre(pieces):
-    """TAG[.postN.devDISTANCE] -- No -dirty.
-
-    Exceptions:
-    1: no tags. 0.post0.devDISTANCE
-    """
-    if pieces["closest-tag"]:
-        if pieces["distance"]:
-            # update the post release segment
-            tag_version, post_version = pep440_split_post(pieces["closest-tag"])
-            rendered = tag_version
-            if post_version is not None:
-                rendered += ".post%d.dev%d" % (post_version+1, pieces["distance"])
-            else:
-                rendered += ".post0.dev%d" % (pieces["distance"])
-        else:
-            # no commits, use the tag as the version
-            rendered = pieces["closest-tag"]
-    else:
-        # exception #1
-        rendered = "0.post0.dev%d" % pieces["distance"]
-    return rendered
-
-
-def render_pep440_post(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX] .
-
-    The ".dev0" means dirty. Note that .dev0 sorts backwards
-    (a dirty tree will appear "older" than the corresponding clean one),
-    but you shouldn't be releasing software with -dirty anyways.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%s" % pieces["short"]
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-        rendered += "+g%s" % pieces["short"]
-    return rendered
-
-
-def render_pep440_post_branch(pieces):
-    """TAG[.postDISTANCE[.dev0]+gHEX[.dirty]] .
-
-    The ".dev0" means not master branch.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]+gHEX[.dirty]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["branch"] != "master":
-                rendered += ".dev0"
-            rendered += plus_or_dot(pieces)
-            rendered += "g%s" % pieces["short"]
-            if pieces["dirty"]:
-                rendered += ".dirty"
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["branch"] != "master":
-            rendered += ".dev0"
-        rendered += "+g%s" % pieces["short"]
-        if pieces["dirty"]:
-            rendered += ".dirty"
-    return rendered
-
-
-def render_pep440_old(pieces):
-    """TAG[.postDISTANCE[.dev0]] .
-
-    The ".dev0" means dirty.
-
-    Exceptions:
-    1: no tags. 0.postDISTANCE[.dev0]
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"] or pieces["dirty"]:
-            rendered += ".post%d" % pieces["distance"]
-            if pieces["dirty"]:
-                rendered += ".dev0"
-    else:
-        # exception #1
-        rendered = "0.post%d" % pieces["distance"]
-        if pieces["dirty"]:
-            rendered += ".dev0"
-    return rendered
-
-
-def render_git_describe(pieces):
-    """TAG[-DISTANCE-gHEX][-dirty].
-
-    Like 'git describe --tags --dirty --always'.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        if pieces["distance"]:
-            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render_git_describe_long(pieces):
-    """TAG-DISTANCE-gHEX[-dirty].
-
-    Like 'git describe --tags --dirty --always -long'.
-    The distance/hash is unconditional.
-
-    Exceptions:
-    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
-    """
-    if pieces["closest-tag"]:
-        rendered = pieces["closest-tag"]
-        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
-    else:
-        # exception #1
-        rendered = pieces["short"]
-    if pieces["dirty"]:
-        rendered += "-dirty"
-    return rendered
-
-
-def render(pieces, style):
-    """Render the given version pieces into the requested style."""
-    if pieces["error"]:
-        return {"version": "unknown",
-                "full-revisionid": pieces.get("long"),
-                "dirty": None,
-                "error": pieces["error"],
-                "date": None}
-
-    if not style or style == "default":
-        style = "pep440"  # the default
-
-    if style == "pep440":
-        rendered = render_pep440(pieces)
-    elif style == "pep440-branch":
-        rendered = render_pep440_branch(pieces)
-    elif style == "pep440-pre":
-        rendered = render_pep440_pre(pieces)
-    elif style == "pep440-post":
-        rendered = render_pep440_post(pieces)
-    elif style == "pep440-post-branch":
-        rendered = render_pep440_post_branch(pieces)
-    elif style == "pep440-old":
-        rendered = render_pep440_old(pieces)
-    elif style == "git-describe":
-        rendered = render_git_describe(pieces)
-    elif style == "git-describe-long":
-        rendered = render_git_describe_long(pieces)
-    else:
-        raise ValueError("unknown style '%s'" % style)
-
-    return {"version": rendered, "full-revisionid": pieces["long"],
-            "dirty": pieces["dirty"], "error": None,
-            "date": pieces.get("date")}
-
-
-class VersioneerBadRootError(Exception):
-    """The project root directory is unknown or missing key files."""
-
-
-def get_versions(verbose=False):
-    """Get the project version from whatever source is available.
-
-    Returns dict with two keys: 'version' and 'full'.
-    """
-    if "versioneer" in sys.modules:
-        # see the discussion in cmdclass.py:get_cmdclass()
-        del sys.modules["versioneer"]
-
-    root = get_root()
-    cfg = get_config_from_root(root)
-
-    assert cfg.VCS is not None, "please set [versioneer]VCS= in setup.cfg"
-    handlers = HANDLERS.get(cfg.VCS)
-    assert handlers, "unrecognized VCS '%s'" % cfg.VCS
-    verbose = verbose or cfg.verbose
-    assert cfg.versionfile_source is not None, \
-        "please set versioneer.versionfile_source"
-    assert cfg.tag_prefix is not None, "please set versioneer.tag_prefix"
-
-    versionfile_abs = os.path.join(root, cfg.versionfile_source)
-
-    # extract version from first of: _version.py, VCS command (e.g. 'git
-    # describe'), parentdir. This is meant to work for developers using a
-    # source checkout, for users of a tarball created by 'setup.py sdist',
-    # and for users of a tarball/zipball created by 'git archive' or github's
-    # download-from-tag feature or the equivalent in other VCSes.
-
-    get_keywords_f = handlers.get("get_keywords")
-    from_keywords_f = handlers.get("keywords")
-    if get_keywords_f and from_keywords_f:
-        try:
-            keywords = get_keywords_f(versionfile_abs)
-            ver = from_keywords_f(keywords, cfg.tag_prefix, verbose)
-            if verbose:
-                print("got version from expanded keyword %s" % ver)
-            return ver
-        except NotThisMethod:
-            pass
-
-    try:
-        ver = versions_from_file(versionfile_abs)
-        if verbose:
-            print("got version from file %s %s" % (versionfile_abs, ver))
-        return ver
-    except NotThisMethod:
-        pass
-
-    from_vcs_f = handlers.get("pieces_from_vcs")
-    if from_vcs_f:
-        try:
-            pieces = from_vcs_f(cfg.tag_prefix, root, verbose)
-            ver = render(pieces, cfg.style)
-            if verbose:
-                print("got version from VCS %s" % ver)
-            return ver
-        except NotThisMethod:
-            pass
-
-    try:
-        if cfg.parentdir_prefix:
-            ver = versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
-            if verbose:
-                print("got version from parentdir %s" % ver)
-            return ver
-    except NotThisMethod:
-        pass
-
-    if verbose:
-        print("unable to compute version")
-
-    return {"version": "0+unknown", "full-revisionid": None,
-            "dirty": None, "error": "unable to compute version",
-            "date": None}
-
-
-def get_version():
-    """Get the short version string for this project."""
-    return get_versions()["version"]
-
-
-def get_cmdclass(cmdclass=None):
-    """Get the custom setuptools/distutils subclasses used by Versioneer.
-
-    If the package uses a different cmdclass (e.g. one from numpy), it
-    should be provide as an argument.
-    """
-    if "versioneer" in sys.modules:
-        del sys.modules["versioneer"]
-        # this fixes the "python setup.py develop" case (also 'install' and
-        # 'easy_install .'), in which subdependencies of the main project are
-        # built (using setup.py bdist_egg) in the same python process. Assume
-        # a main project A and a dependency B, which use different versions
-        # of Versioneer. A's setup.py imports A's Versioneer, leaving it in
-        # sys.modules by the time B's setup.py is executed, causing B to run
-        # with the wrong versioneer. Setuptools wraps the sub-dep builds in a
-        # sandbox that restores sys.modules to it's pre-build state, so the
-        # parent is protected against the child's "import versioneer". By
-        # removing ourselves from sys.modules here, before the child build
-        # happens, we protect the child from the parent's versioneer too.
-        # Also see https://github.com/python-versioneer/python-versioneer/issues/52
-
-    cmds = {} if cmdclass is None else cmdclass.copy()
-
-    # we add "version" to both distutils and setuptools
-    try:
-        from setuptools import Command
-    except ImportError:
-        from distutils.core import Command
-
-    class cmd_version(Command):
-        description = "report generated version string"
-        user_options = []
-        boolean_options = []
-
-        def initialize_options(self):
-            pass
-
-        def finalize_options(self):
-            pass
-
-        def run(self):
-            vers = get_versions(verbose=True)
-            print("Version: %s" % vers["version"])
-            print(" full-revisionid: %s" % vers.get("full-revisionid"))
-            print(" dirty: %s" % vers.get("dirty"))
-            print(" date: %s" % vers.get("date"))
-            if vers["error"]:
-                print(" error: %s" % vers["error"])
-    cmds["version"] = cmd_version
-
-    # we override "build_py" in both distutils and setuptools
-    #
-    # most invocation pathways end up running build_py:
-    #  distutils/build -> build_py
-    #  distutils/install -> distutils/build ->..
-    #  setuptools/bdist_wheel -> distutils/install ->..
-    #  setuptools/bdist_egg -> distutils/install_lib -> build_py
-    #  setuptools/install -> bdist_egg ->..
-    #  setuptools/develop -> ?
-    #  pip install:
-    #   copies source tree to a tempdir before running egg_info/etc
-    #   if .git isn't copied too, 'git describe' will fail
-    #   then does setup.py bdist_wheel, or sometimes setup.py install
-    #  setup.py egg_info -> ?
-
-    # we override different "build_py" commands for both environments
-    if 'build_py' in cmds:
-        _build_py = cmds['build_py']
-    elif "setuptools" in sys.modules:
-        from setuptools.command.build_py import build_py as _build_py
-    else:
-        from distutils.command.build_py import build_py as _build_py
-
-    class cmd_build_py(_build_py):
-        def run(self):
-            root = get_root()
-            cfg = get_config_from_root(root)
-            versions = get_versions()
-            _build_py.run(self)
-            # now locate _version.py in the new build/ directory and replace
-            # it with an updated value
-            if cfg.versionfile_build:
-                target_versionfile = os.path.join(self.build_lib,
-                                                  cfg.versionfile_build)
-                print("UPDATING %s" % target_versionfile)
-                write_to_version_file(target_versionfile, versions)
-    cmds["build_py"] = cmd_build_py
-
-    if 'build_ext' in cmds:
-        _build_ext = cmds['build_ext']
-    elif "setuptools" in sys.modules:
-        from setuptools.command.build_ext import build_ext as _build_ext
-    else:
-        from distutils.command.build_ext import build_ext as _build_ext
-
-    class cmd_build_ext(_build_ext):
-        def run(self):
-            root = get_root()
-            cfg = get_config_from_root(root)
-            versions = get_versions()
-            _build_ext.run(self)
-            if self.inplace:
-                # build_ext --inplace will only build extensions in
-                # build/lib<..> dir with no _version.py to write to.
-                # As in place builds will already have a _version.py
-                # in the module dir, we do not need to write one.
-                return
-            # now locate _version.py in the new build/ directory and replace
-            # it with an updated value
-            target_versionfile = os.path.join(self.build_lib,
-                                              cfg.versionfile_build)
-            print("UPDATING %s" % target_versionfile)
-            write_to_version_file(target_versionfile, versions)
-    cmds["build_ext"] = cmd_build_ext
-
-    if "cx_Freeze" in sys.modules:  # cx_freeze enabled?
-        from cx_Freeze.dist import build_exe as _build_exe
-        # nczeczulin reports that py2exe won't like the pep440-style string
-        # as FILEVERSION, but it can be used for PRODUCTVERSION, e.g.
-        # setup(console=[{
-        #   "version": versioneer.get_version().split("+", 1)[0], # FILEVERSION
-        #   "product_version": versioneer.get_version(),
-        #   ...
-
-        class cmd_build_exe(_build_exe):
-            def run(self):
-                root = get_root()
-                cfg = get_config_from_root(root)
-                versions = get_versions()
-                target_versionfile = cfg.versionfile_source
-                print("UPDATING %s" % target_versionfile)
-                write_to_version_file(target_versionfile, versions)
-
-                _build_exe.run(self)
-                os.unlink(target_versionfile)
-                with open(cfg.versionfile_source, "w") as f:
-                    LONG = LONG_VERSION_PY[cfg.VCS]
-                    f.write(LONG %
-                            {"DOLLAR": "$",
-                             "STYLE": cfg.style,
-                             "TAG_PREFIX": cfg.tag_prefix,
-                             "PARENTDIR_PREFIX": cfg.parentdir_prefix,
-                             "VERSIONFILE_SOURCE": cfg.versionfile_source,
-                             })
-        cmds["build_exe"] = cmd_build_exe
-        del cmds["build_py"]
-
-    if 'py2exe' in sys.modules:  # py2exe enabled?
-        from py2exe.distutils_buildexe import py2exe as _py2exe
-
-        class cmd_py2exe(_py2exe):
-            def run(self):
-                root = get_root()
-                cfg = get_config_from_root(root)
-                versions = get_versions()
-                target_versionfile = cfg.versionfile_source
-                print("UPDATING %s" % target_versionfile)
-                write_to_version_file(target_versionfile, versions)
-
-                _py2exe.run(self)
-                os.unlink(target_versionfile)
-                with open(cfg.versionfile_source, "w") as f:
-                    LONG = LONG_VERSION_PY[cfg.VCS]
-                    f.write(LONG %
-                            {"DOLLAR": "$",
-                             "STYLE": cfg.style,
-                             "TAG_PREFIX": cfg.tag_prefix,
-                             "PARENTDIR_PREFIX": cfg.parentdir_prefix,
-                             "VERSIONFILE_SOURCE": cfg.versionfile_source,
-                             })
-        cmds["py2exe"] = cmd_py2exe
-
-    # we override different "sdist" commands for both environments
-    if 'sdist' in cmds:
-        _sdist = cmds['sdist']
-    elif "setuptools" in sys.modules:
-        from setuptools.command.sdist import sdist as _sdist
-    else:
-        from distutils.command.sdist import sdist as _sdist
-
-    class cmd_sdist(_sdist):
-        def run(self):
-            versions = get_versions()
-            self._versioneer_generated_versions = versions
-            # unless we update this, the command will keep using the old
-            # version
-            self.distribution.metadata.version = versions["version"]
-            return _sdist.run(self)
-
-        def make_release_tree(self, base_dir, files):
-            root = get_root()
-            cfg = get_config_from_root(root)
-            _sdist.make_release_tree(self, base_dir, files)
-            # now locate _version.py in the new base_dir directory
-            # (remembering that it may be a hardlink) and replace it with an
-            # updated value
-            target_versionfile = os.path.join(base_dir, cfg.versionfile_source)
-            print("UPDATING %s" % target_versionfile)
-            write_to_version_file(target_versionfile,
-                                  self._versioneer_generated_versions)
-    cmds["sdist"] = cmd_sdist
-
-    return cmds
-
-
-CONFIG_ERROR = """
-setup.cfg is missing the necessary Versioneer configuration. You need
-a section like:
-
- [versioneer]
- VCS = git
- style = pep440
- versionfile_source = src/myproject/_version.py
- versionfile_build = myproject/_version.py
- tag_prefix =
- parentdir_prefix = myproject-
-
-You will also need to edit your setup.py to use the results:
-
- import versioneer
- setup(version=versioneer.get_version(),
-       cmdclass=versioneer.get_cmdclass(), ...)
-
-Please read the docstring in ./versioneer.py for configuration instructions,
-edit setup.cfg, and re-run the installer or 'python versioneer.py setup'.
-"""
-
-SAMPLE_CONFIG = """
-# See the docstring in versioneer.py for instructions. Note that you must
-# re-run 'versioneer.py setup' after changing this section, and commit the
-# resulting files.
-
-[versioneer]
-#VCS = git
-#style = pep440
-#versionfile_source =
-#versionfile_build =
-#tag_prefix =
-#parentdir_prefix =
-
-"""
-
-OLD_SNIPPET = """
-from ._version import get_versions
-__version__ = get_versions()['version']
-del get_versions
-"""
-
-INIT_PY_SNIPPET = """
-from . import {0}
-__version__ = {0}.get_versions()['version']
-"""
-
-
-def do_setup():
-    """Do main VCS-independent setup function for installing Versioneer."""
-    root = get_root()
-    try:
-        cfg = get_config_from_root(root)
-    except (OSError, configparser.NoSectionError,
-            configparser.NoOptionError) as e:
-        if isinstance(e, (OSError, configparser.NoSectionError)):
-            print("Adding sample versioneer config to setup.cfg",
-                  file=sys.stderr)
-            with open(os.path.join(root, "setup.cfg"), "a") as f:
-                f.write(SAMPLE_CONFIG)
-        print(CONFIG_ERROR, file=sys.stderr)
-        return 1
-
-    print(" creating %s" % cfg.versionfile_source)
-    with open(cfg.versionfile_source, "w") as f:
-        LONG = LONG_VERSION_PY[cfg.VCS]
-        f.write(LONG % {"DOLLAR": "$",
-                        "STYLE": cfg.style,
-                        "TAG_PREFIX": cfg.tag_prefix,
-                        "PARENTDIR_PREFIX": cfg.parentdir_prefix,
-                        "VERSIONFILE_SOURCE": cfg.versionfile_source,
-                        })
-
-    ipy = os.path.join(os.path.dirname(cfg.versionfile_source),
-                       "__init__.py")
-    if os.path.exists(ipy):
-        try:
-            with open(ipy, "r") as f:
-                old = f.read()
-        except OSError:
-            old = ""
-        module = os.path.splitext(os.path.basename(cfg.versionfile_source))[0]
-        snippet = INIT_PY_SNIPPET.format(module)
-        if OLD_SNIPPET in old:
-            print(" replacing boilerplate in %s" % ipy)
-            with open(ipy, "w") as f:
-                f.write(old.replace(OLD_SNIPPET, snippet))
-        elif snippet not in old:
-            print(" appending to %s" % ipy)
-            with open(ipy, "a") as f:
-                f.write(snippet)
-        else:
-            print(" %s unmodified" % ipy)
-    else:
-        print(" %s doesn't exist, ok" % ipy)
-        ipy = None
-
-    # Make sure both the top-level "versioneer.py" and versionfile_source
-    # (PKG/_version.py, used by runtime code) are in MANIFEST.in, so
-    # they'll be copied into source distributions. Pip won't be able to
-    # install the package without this.
-    manifest_in = os.path.join(root, "MANIFEST.in")
-    simple_includes = set()
-    try:
-        with open(manifest_in, "r") as f:
-            for line in f:
-                if line.startswith("include "):
-                    for include in line.split()[1:]:
-                        simple_includes.add(include)
-    except OSError:
-        pass
-    # That doesn't cover everything MANIFEST.in can do
-    # (http://docs.python.org/2/distutils/sourcedist.html#commands), so
-    # it might give some false negatives. Appending redundant 'include'
-    # lines is safe, though.
-    if "versioneer.py" not in simple_includes:
-        print(" appending 'versioneer.py' to MANIFEST.in")
-        with open(manifest_in, "a") as f:
-            f.write("include versioneer.py\n")
-    else:
-        print(" 'versioneer.py' already in MANIFEST.in")
-    if cfg.versionfile_source not in simple_includes:
-        print(" appending versionfile_source ('%s') to MANIFEST.in" %
-              cfg.versionfile_source)
-        with open(manifest_in, "a") as f:
-            f.write("include %s\n" % cfg.versionfile_source)
-    else:
-        print(" versionfile_source already in MANIFEST.in")
-
-    # Make VCS-specific changes. For git, this means creating/changing
-    # .gitattributes to mark _version.py for export-subst keyword
-    # substitution.
-    do_vcs_install(manifest_in, cfg.versionfile_source, ipy)
-    return 0
-
-
-def scan_setup_py():
-    """Validate the contents of setup.py against Versioneer's expectations."""
-    found = set()
-    setters = False
-    errors = 0
-    with open("setup.py", "r") as f:
-        for line in f.readlines():
-            if "import versioneer" in line:
-                found.add("import")
-            if "versioneer.get_cmdclass()" in line:
-                found.add("cmdclass")
-            if "versioneer.get_version()" in line:
-                found.add("get_version")
-            if "versioneer.VCS" in line:
-                setters = True
-            if "versioneer.versionfile_source" in line:
-                setters = True
-    if len(found) != 3:
-        print("")
-        print("Your setup.py appears to be missing some important items")
-        print("(but I might be wrong). Please make sure it has something")
-        print("roughly like the following:")
-        print("")
-        print(" import versioneer")
-        print(" setup( version=versioneer.get_version(),")
-        print("        cmdclass=versioneer.get_cmdclass(),  ...)")
-        print("")
-        errors += 1
-    if setters:
-        print("You should remove lines like 'versioneer.VCS = ' and")
-        print("'versioneer.versionfile_source = ' . This configuration")
-        print("now lives in setup.cfg, and should be removed from setup.py")
-        print("")
-        errors += 1
-    return errors
-
-
-if __name__ == "__main__":
-    cmd = sys.argv[1]
-    if cmd == "setup":
-        errors = do_setup()
-        errors += scan_setup_py()
-        if errors:
-            sys.exit(1)

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