anchor.diff:  }:
   
   let
  -  strPkgs = with pkgs; [
  +  strPkgs = pkgs: [
       strategoPackages018.aterm 
       strategoPackages018.sdf
       strategoPackages018.strategoxt 
  
positive.code:           automake110x 
            autoconf
            ant 
          ] ++ strPkgs ;
        };
  
  
  
negative.code:       , system ? "i686-linux"
        }:
  
        let pkgs = import nixpkgs {inherit system;};
        in with pkgs;
        releaseTools.nixBuild {
          name = "webdsl";
          src = tarball;
          buildInputs = [
            pkgconfig 
          ] ++ strPkgs pkgs ++ lib.optional stdenv.isLinux apacheAnt;
          
          doCheck = if stdenv.isLinux then true else false;
        };
  