python312Packages.petsc4py: init at 3.22.3

pkgs/by-name/pe/petsc/fix-petsc4py-install-prefix.patch

@@ -0,0 +1,22 @@
+diff --git a/config/BuildSystem/config/packages/petsc4py.py b/config/BuildSystem/config/packages/petsc4py.py
+index 4a58243..831aa04 100644
+--- a/config/BuildSystem/config/packages/petsc4py.py
++++ b/config/BuildSystem/config/packages/petsc4py.py
+@@ -37,7 +37,7 @@ class Configure(config.package.Package):
+ 
+   def Install(self):
+     import os
+-    installLibPath = os.path.join(self.installDir, 'lib')
++    installLibPath = os.path.join(self.installDir, 'lib', '@PYTHON_SITEPACKAGES@')
+     if self.setCompilers.isDarwin(self.log):
+       apple = 'You may need to\n (csh/tcsh) setenv MACOSX_DEPLOYMENT_TARGET 10.X\n (sh/bash) MACOSX_DEPLOYMENT_TARGET=10.X; export MACOSX_DEPLOYMENT_TARGET\nbefore running make on PETSc'
+     else:
+@@ -70,7 +70,7 @@ class Configure(config.package.Package):
+       newdir += 'NUMPY_INCLUDE="'+numpy_include+'" '
+ 
+     self.addDefine('HAVE_PETSC4PY',1)
+-    self.addDefine('PETSC4PY_INSTALL_PATH','"'+os.path.join(self.installdir.dir,'lib')+'"')
++    self.addDefine('PETSC4PY_INSTALL_PATH','"'+installLibPath+'"')
+     self.addMakeMacro('PETSC4PY','yes')
+     self.addMakeRule('petsc4pybuild','', \
+                        ['@echo "*** Building petsc4py ***"',\

pkgs/by-name/pe/petsc/package.nix

@@ -4,7 +4,10 @@
   fetchzip,
   cctools,
   gfortran,
+  replaceVars,
   python3,
+  python3Packages,
+  withPetsc4py ? false,
   blas,
   lapack,
   mpiSupport ? true,
@@ -51,11 +54,19 @@ stdenv.mkDerivation rec {
   };
 
   strictDeps = true;
-  nativeBuildInputs = [
-    python3
-    gfortran
-    pkg-config
-  ] ++ lib.optional mpiSupport mpi;
+
+  nativeBuildInputs =
+    [
+      python3
+      gfortran
+      pkg-config
+    ]
+    ++ lib.optional mpiSupport mpi
+    ++ lib.optionals withPetsc4py [
+      python3Packages.setuptools
+      python3Packages.cython
+    ];
+
   buildInputs =
     [
       blas
@@ -69,6 +80,14 @@ stdenv.mkDerivation rec {
     ++ lib.optional withScalapack scalapack
     ++ lib.optional withMumps mumps_par;
 
+  propagatedBuildInputs = lib.optional withPetsc4py python3Packages.numpy;
+
+  patches = [
+    (replaceVars ./fix-petsc4py-install-prefix.patch {
+      PYTHON_SITEPACKAGES = python3.sitePackages;
+    })
+  ];
+
   postPatch =
     ''
       patchShebangs ./lib/petsc/bin
@@ -86,6 +105,7 @@ stdenv.mkDerivation rec {
       "--with-precision=${petsc-precision}"
       "--with-mpi=${if mpiSupport then "1" else "0"}"
     ]
+    ++ lib.optional withPetsc4py "--with-petsc4py=1"
     ++ lib.optionals mpiSupport [
       "--CC=mpicc"
       "--with-cxx=mpicxx"

pkgs/top-level/python-packages.nix

@@ -10342,6 +10342,12 @@ self: super: with self; {
 
   pesq = callPackage ../development/python-modules/pesq { };
 
+  petsc4py = toPythonModule (pkgs.petsc.override {
+    python3 = python;
+    python3Packages = self;
+    withPetsc4py = true;
+  });
+
   pex = callPackage ../development/python-modules/pex { };
 
   pexif = callPackage ../development/python-modules/pexif { };