anchor.diff:      wrapGAppsHook
       meson
       ninja
  -    python3
     ];
   
     buildInputs = [
  
positive.code: , wrapGAppsHook
  , meson
  , ninja
  , python3
  , gsettings-desktop-schemas
  , itstool
  , gnome
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-system-monitor";
    version = "42.rc";
  
    src = fetchurl {
      url = "mirror://gnome/sources/gnome-system-monitor/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "CfScgbZZVvHW3ZnumpQRJkvzSPRRbIu6m6sLX/x8D0c=";
    };
  
    nativeBuildInputs = [
  