anchor.diff:      evolution-data-server
       feedbackd
       glibmm
  +    gnome.gnome-desktop
       gspell
       gtk3
       json-glib
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "chatty";
    version = "0.4.0";
  
    src = fetchFromGitLab {
      domain = "source.puri.sm";
      owner = "Librem5";
      repo = "chatty";
      rev = "v${version}";
      sha256 = "12k1a5xrwd6zk4x0m53hbzggk695z3bpbzy1wcikzy0jvch7h13d";
    };
  
    postPatch = ''
  
negative.code: , evolution-data-server
  , feedbackd
  , glibmm
  , gnome
  , gspell
  , gtk3
  , json-glib
  