anchor.diff:  { stdenv
   , fetchFromGitHub
   , pantheon
  -, cmake
  +, meson
  +, ninja
  +, python3
   , pkg-config
   , vala
   , gettext
  
positive.code:     libgee
      pantheon.granite
    ];
  
    passthru = {
      updateScript = pantheon.updateScript {
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "agenda";
    version = "1.1.0";
  
    src = fetchFromGitHub {
      owner = "dahenson";
      repo = pname;
      rev = version;
      sha256 = "0yfapapsanqacaa83iagar88i335yy2jvay8y6z7gkri7avbs4am";
    };
  
    nativeBuildInputs = [
      gettext
      glib # for glib-compile-schemas
      meson
      ninja
      pkg-config
      python3
      vala
      wrapGAppsHook
    ];
  
  