anchor.diff:  { }:
   
   let
  -  pkgs = import <nixpkgs> { };
  +   pkgs = import <nixpkgs> { };
  +   devtools = [
  +        pkgs.cacert
  +        pkgs.git
  +        pkgs.gitAndTools.tig
  +    ];
   in
   
   with pkgs;
   
   rec {
   
  -  # source file to load bash environment with dependencies
  -  policycompass-env = myEnvFun {
  +  policycompass-env = stdenv.mkDerivation {
       name = "policycompass";
  -    buildInputs = with pkgs; [ policycompass ];
  -    extraCmds =
  -        "export PYTHONHOME=${python34env}; export PATH=$PATH:${nodejs-env}/bin;"
  -    ;
  +    buildInputs = [ policycompass ];
     };
   
     # install dependencies
  
positive.code:         ];
    };
  
    meld334 = buildPythonPackage {
       name = "meld3-1.0.0";
       buildInputs = [ python34 ];
       src = pkgs.fetchurl {
  
negative.code:         policycompass_adhocracy
          policycompass_frontend
          tests
          ];
    };
  
  