anchor.diff:    ];
   
     doCheck = true;
  -
  -  postPatch = ''
  -    chmod +x meson_post_install.py # patchShebangs requires executable file
  -    patchShebangs meson_post_install.py
  -  '';
   
     preCheck = ''
       # Currency conversion test tries to store currency data in $HOME/.cache.
  
positive.code:     gettext
      itstool
      wrapGAppsHook
      python3
      gobject-introspection # for finding vapi files
    ];
  
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-calculator";
    version = "42.rc";
  
    src = fetchurl {
      url = "mirror://gnome/sources/gnome-calculator/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "1quQqyiDQc/WQYAkmT5FdW8+es8CVSV2IH9q1R5qBlA=";
    };
  
    nativeBuildInputs = [
  