{ stdenv, fetchgit, buildNimblePackage, gnunet, makeWrapper }:

let
  gnunet_nim = buildNimblePackage rec {
    name = "gnunet_nim-${version}";
    version = "0.1.0";
    src = fetchgit {
      url =  https://git.gnunet.org/gnunet-nim.git;
      rev = "3a1416d57727ccc277baad1bb9ec83f690476aaf";
      sha256 = "0c7a15ickcd1xbxh78yjbsv93rz9055kvvi7fv4iqq9g1x0vh5nd";
    };
    
    buildInputs = [ gnunet ];
  };
in
buildNimblePackage rec {
  name = "groupchat-${version}";
  version = "0.1.0";

  src = fetchgit {
    url =  https://git.gnunet.org/groupchat.git;
    rev = "0519dbb561fd4c600f3ae916598fbdf53c668e91";
    sha256 = "1s2wr7ckrixwmv08ilywmqvq74kcydpay1n4ds1fmh28xslzdqxm";
  };

  nimDeps = [ gnunet_nim ];

  buildInputs = [ makeWrapper ];

  postInstall = ''
    wrapProgram $out/bin/groupchat --prefix LD_LIBRARY_PATH : ${gnunet}/lib --prefix PATH : ${gnunet}/bin
  '';
}