nixpkgs/pkgs/misc/bleeding-edge-fetch-info/http.nix

 args: with args; fetchurl { 
  url = http://mawercer.de/~nix/repos/http.tar.gz;
  sha256 = "3e463fa090c6a7ddb06e88b592b1788a216db7eaf9384850b6d462217ba5be62";}