anchor.diff:      gst_all_1.gst-plugins-good
       gst_all_1.gstreamer
       gtk3
  +    json-glib
       libcanberra
       libpeas
       sqlite
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-shell-pomodoro";
    version = "0.20.0";
  
    src = fetchFromGitHub {
      owner = "gnome-pomodoro";
      repo = "gnome-pomodoro";
      rev = version;
      sha256 = "sha256-USzLHoBM0QbBPtbTzJJY02cOSDtmlxPGYhMj7M1FJic=";
    };
  
    patches = [
  
negative.code:     (substituteAll {
        src = ./fix-schema-path.patch;
        inherit pname version;
      })
    ];
  
  