python312Packages.mpi-pytest: init at 2025.4.0

pkgs/development/python-modules/mpi-pytest/default.nix

@@ -0,0 +1,59 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  setuptools,
+  mpi4py,
+  pytest,
+  pytestCheckHook,
+  mpiCheckPhaseHook,
+}:
+
+buildPythonPackage rec {
+  pname = "mpi-pytest";
+  version = "2025.4.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "firedrakeproject";
+    repo = "mpi-pytest";
+    tag = "v${version}";
+    hash = "sha256-r9UB5H+qAJc6k2SVAiOCI2yRDLNv2zKRmfrAan+cX9I=";
+  };
+
+  # A temporary fixup to support fork mode with openmpi implemention
+  # See https://github.com/firedrakeproject/mpi-pytest/pull/17
+  postPatch = lib.optionalString (mpi4py.mpi.pname == "openmpi") ''
+    substituteInPlace pytest_mpi/plugin.py \
+      --replace-fail '"-genv", CHILD_PROCESS_FLAG, "1"' '"-x", f"{CHILD_PROCESS_FLAG}=1"'
+  '';
+
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
+    mpi4py
+    pytest
+  ];
+
+  pythonImportsCheck = [
+    "pytest_mpi"
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    mpiCheckPhaseHook
+    mpi4py.mpi
+  ];
+
+  __darwinAllowLocalNetworking = true;
+
+  meta = {
+    homepage = "https://github.com/firedrakeproject/mpi-pytest";
+    description = "Pytest plugin that lets you run tests in parallel with MPI";
+    changelog = "https://github.com/firedrakeproject/mpi-pytest/releases/tag/${src.tag}";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ qbisi ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -9102,6 +9102,8 @@ self: super: with self; {
 
   mpegdash = callPackage ../development/python-modules/mpegdash { };
 
+  mpi-pytest = callPackage ../development/python-modules/mpi-pytest { };
+
   mpi4py = callPackage ../development/python-modules/mpi4py { };
 
   mpire = callPackage ../development/python-modules/mpire { };