push sheeet

pkgs/development/python-modules/pdm-backend/default.nix

@@ -0,0 +1,62 @@
+{
+  lib,
+  buildPythonPackage,
+  pythonOlder,
+  fetchFromGitHub,
+
+  # propagates
+  importlib-metadata,
+
+  # tests
+  editables,
+  gitMinimal,
+  mercurial,
+  pytestCheckHook,
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "pdm-backend";
+  version = "2.4.5";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "pdm-project";
+    repo = "pdm-backend";
+    tag = version;
+    hash = "sha256-tXgojVE/Bh2OVeMG/P5aCK5HEeUhiypUjTrS4yOwvZU=";
+  };
+
+  env.PDM_BUILD_SCM_VERSION = version;
+
+  dependencies = lib.optionals (pythonOlder "3.10") [ importlib-metadata ];
+
+  pythonImportsCheck = [ "pdm.backend" ];
+
+  nativeCheckInputs = [
+    editables
+    gitMinimal
+    mercurial
+    pytestCheckHook
+    setuptools
+  ];
+
+  preCheck = ''
+    unset PDM_BUILD_SCM_VERSION
+
+    # tests require a configured git identity
+    export HOME=$TMPDIR
+    git config --global user.name nixbld
+    git config --global user.email nixbld@localhost
+  '';
+
+  setupHook = ./setup-hook.sh;
+
+  meta = with lib; {
+    homepage = "https://github.com/pdm-project/pdm-backend";
+    changelog = "https://github.com/pdm-project/pdm-backend/releases/tag/${version}";
+    description = "Yet another PEP 517 backend";
+    license = licenses.mit;
+    maintainers = with maintainers; [ hexa ];
+  };
+}

pkgs/development/python-modules/pdm-backend/setup-hook.sh

@@ -0,0 +1,10 @@
+pdm-version-pretend-hook() {
+  if [ -z "${PDM_BUILD_SCM_VERSION-}" ]; then
+    echo "Setting PDM_BUILD_SCM_VERSION to $version"
+    export PDM_BUILD_SCM_VERSION="$version"
+  fi
+}
+
+if [ -z "${dontSetPdmBackendVersion-}" ]; then
+  preBuildHooks+=(pdm-version-pretend-hook)
+fi