anchor.diff:    buildInputs = [
       glib
       gtk3
  -    itstool
  -    gettext
       pango
       gdk-pixbuf
     ];
  
positive.code: , fetchFromGitHub
  , meson
  , python3Packages
  , pkgconfig
  , ninja
  , gtk3
  , wrapGAppsHook
  
negative.code: 
  python3Packages.buildPythonApplication rec {
    pname = "gtg";
    version = "unstable-2020-08-02";
  
    src = fetchFromGitHub {
      owner = "getting-things-gnome";
      repo = "gtg";
      rev = "6623731f301c1b9c7b727e009f4a6462ad381c68";
      sha256 = "14gxgg4nl0ki3dn913041jpyfhxsj90fkd55z6mmpyklhr8mwss1";
    };
  
  
    nativeBuildInputs = [
      meson
      ninja
      itstool
      gettext
      wrapGAppsHook
      gobject-introspection
    ];
  