Merge #18280: pygtk: fix broken symlink

pkgs/development/python-modules/pygobject/default.nix

···
 { stdenv, fetchurl, python, mkPythonDerivation, pkgconfig, glib }:
 
 mkPythonDerivation rec {
-  name = "pygobject-2.28.6";
-  
+  name = "pygobject-${version}";
+  version = "2.28.6";
+
   src = fetchurl {
     url = "mirror://gnome/sources/pygobject/2.28/${name}.tar.xz";
     sha256 = "1f5dfxjnil2glfwxnqr14d2cjfbkghsbsn8n04js2c2icr7iv2pv";

pkgs/development/python-modules/pygtk/default.nix

···
   postInstall = ''
     rm $out/bin/pygtk-codegen-2.0
     ln -s ${pygobject}/bin/pygobject-codegen-2.0  $out/bin/pygtk-codegen-2.0
-    ln -s ${pygobject}/lib/${python.libPrefix}/site-packages/${pygobject.name}.pth \
+    ln -s ${pygobject}/lib/${python.libPrefix}/site-packages/pygobject-${pygobject.version}.pth \
                   $out/lib/${python.libPrefix}/site-packages/${name}.pth
   '';
 }