anchor.diff:    };
   
     nativeBuildInputs = [ makeWrapper ];
  -  buildInputs = [ nim pcre ];
  +  buildInputs = [ pcre ];
   
     patches = [
       (fetchpatch {
  
positive.code: 
    NIX_LDFLAGS = "-lpcre";
  
    buildPhase = ''
      HOME=$TMPDIR
      nim c -d:release nrpl.nim
    '';
  
    installPhase = "install -Dt $out/bin nrpl";
  
    postFixup = ''
      wrapProgram $out/bin/nrpl \
        --prefix PATH : ${lib.makeBinPath [ nim tinycc ]}
    '';
  
    meta = with lib; {
  
negative.code: { lib, nimPackages, fetchFromGitHub, fetchpatch, makeWrapper, pcre, tinycc }:
  
  nimPackages.buildNimPackage {
    pname = "nrpl";
    version = "20150522";
    nimBinOnly = true;
  
    src = fetchFromGitHub {
      owner  = "wheineman";
  