anchor.diff:      gobject-introspection
       vala
       gtk-doc
  -    (python3.withPackages (pkgs: with pkgs; [
  -      setuptools
  -    ]))
  +    python3
     ];
   
     buildInputs = [
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "libjcat";
    version = "0.1.7";
  
    outputs = [ "bin" "out" "dev" "devdoc" "man" "installedTests" ];
  
  
negative.code:     owner = "hughsie";
      repo = "libjcat";
      rev = version;
      sha256 = "sha256-6fqcP8LWvRoDf5gJz+kW0w5+3PP/luuoPMak1QLKzzM=";
    };
  
    patches = [
  