Pull in improvements from nixpkgs PR.

nix/configuration/roles/amd_s2idle/cysystemd.nix

@@ -1,76 +1,48 @@
-# unpackPhase
-# patchPhase
-# configurePhase
-# buildPhase
-# checkPhase
-# installPhase
-# fixupPhase
-# installCheckPhase
-# distPhase
 {
-  stdenv,
-  pkgs,
-  sqlite,
-  makeWrapper,
   lib,
-  python3,
-  systemd,
-  # setuptools,
-  # cython,
+  pkgs,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pythonOlder,
+  cython,
   pkg-config,
-  # python3Packages,
-  ...
+  setuptools,
 }:
+
 let
   version = "1.6.3";
 in
-python3.pkgs.buildPythonPackage {
+buildPythonPackage {
   pname = "cysystemd";
-  version = version;
+  inherit version;
   pyproject = true;
 
-  # format = "pyproject";
+  src = fetchFromGitHub {
+    owner = "mosquito";
+    repo = "cysystemd";
+    tag = version;
+    hash = "sha256-xumrQgoKfFeKdRQUIYXXiXEcNd76i4wo/EIDm8BN7oU=";
+  };
+
+  disabled = pythonOlder "3.6";
 
   build-system = [
-    python3.pkgs.setuptools
-    python3.pkgs.cython
+    setuptools
+    cython
   ];
-  buildInputs = [ systemd ];
-  nativeBuildInputs = with python3.pkgs; [
-    # setuptools
-    # setuptools-git-versioning
-    # setuptools-git
-    # pyudev
-    # pkgs.systemd
+
+  nativeBuildInputs = [
     pkg-config
   ];
-  propagatedBuildInputs = with python3.pkgs; [
-    # pyudev
-    # pandas
-    # jinja2
-    # tabulate
-    # seaborn
-    # cysystemd
-    # jinja2
-    # matplotlib
-    # seaborn
-  ];
-  src = pkgs.fetchgit {
-    url = "https://github.com/mosquito/cysystemd.git";
-    tag = version;
-    sha256 = "sha256-xumrQgoKfFeKdRQUIYXXiXEcNd76i4wo/EIDm8BN7oU=";
-    # leaveDotGit = true;
-  };
 
-  # postPatch = ''
-  #   substituteInPlace pyproject.toml \
-  #     --replace-fail ', "setuptools-git-versioning>=2.0,<3"' ""
-  # '';
+  buildInputs = [ pkgs.systemd ];
 
-  meta = with lib; {
+  pythonImportsCheck = [ "cysystemd" ];
+
+  meta = {
     description = "systemd wrapper on Cython";
     homepage = "https://github.com/mosquito/cysystemd";
-    license = licenses.asl20;
-    platforms = platforms.linux;
+    license = lib.licenses.asl20;
+    platforms = lib.platforms.linux;
   };
 }