anchor.diff:  , libpeas
   , dbus
   , vala
  +, wrapGAppsHook
   , xorg
   , xvfb_run
   , libxml2
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "calls";
    version = "unstable-2019-10-29";
  
    src = fetchFromGitLab {
      domain = "source.puri.sm";
      owner = "Librem5";
      repo = "calls";
      rev = "9fe575053d8f01c3a76a6c20d39f0816166d5afd";
      sha256 = "01inx4mvrzvklwrfryw5hw9p89v8cn78m3qmv97g7a3v0h5c0n35";
    };
  
  
negative.code:     pkgconfig
      desktop-file-utils
      vala
      wrapGAppsHook
    ];
  
    buildInputs = [
  