meson: clean up

pkgs/development/tools/build-managers/meson/default.nix

@@ -1,32 +1,20 @@
 { lib
-, python3Packages
+, python3
 , stdenv
 , writeTextDir
 , substituteAll
 , pkgsHostHost
 }:
 
-python3Packages.buildPythonApplication rec {
+python3.pkgs.buildPythonApplication rec {
   pname = "meson";
   version = "0.54.2";
 
-  src = python3Packages.fetchPypi {
+  src = python3.pkgs.fetchPypi {
     inherit pname version;
     sha256 = "0m84zb0q67vnxmd6ldz477w6yjdnk9c44xhlwh1g1pzqx3m6wwd7";
   };
 
-  postFixup = ''
-    pushd $out/bin
-    # undo shell wrapper as meson tools are called with python
-    for i in *; do
-      mv ".$i-wrapped" "$i"
-    done
-    popd
-
-    # Do not propagate Python
-    rm $out/nix-support/propagated-build-inputs
-  '';
-
   patches = [
     # Upstream insists on not allowing bindir and other dir options
     # outside of prefix for some reason:
@@ -68,6 +56,18 @@ python3Packages.buildPythonApplication rec {
   # checkInputs = [ ninja pkgconfig ];
   # checkPhase = "python ./run_project_tests.py";
 
+  postFixup = ''
+    pushd $out/bin
+    # undo shell wrapper as meson tools are called with python
+    for i in *; do
+      mv ".$i-wrapped" "$i"
+    done
+    popd
+
+    # Do not propagate Python
+    rm $out/nix-support/propagated-build-inputs
+  '';
+
   meta = with lib; {
     homepage = "https://mesonbuild.com";
     description = "SCons-like build system that use python as a front-end language and Ninja as a building backend";

pkgs/top-level/python-packages.nix

@@ -4645,7 +4645,7 @@ in {
   mesa = callPackage ../development/python-modules/mesa { };
 
   meson = disabledIf (pythonOlder "3.5") (toPythonModule ((pkgs.meson.override {
-    python3Packages = self;
+    python3 = python;
   }).overrideAttrs(oldAttrs: {
      # We do not want the setup hook in Python packages
      # because the build is performed differently.