anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "libshumate";
  -  version = "1.0.0.alpha.1";
  +  version = "1.0.0.beta";
   
     outputs = [ "out" "dev" "devdoc" ];
     outputBin = "devdoc"; # demo app
  
positive.code:     owner = "GNOME";
      repo = "libshumate";
      rev = version;
      sha256 = "4kCXFUJRglh1aIBk03MNUV8jfx0mJzIFCUDM4g9tzlg=";
    };
  
    nativeBuildInputs = [
  
negative.code:     glib
      cairo
      sqlite
      libsoup_3
      gtk4
    ];
  
  