anchor.diff:  
     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 ]}
  +      --prefix PATH : ${lib.makeBinPath [ nimPackages.nim tinycc ]}
     '';
   
     meta = with lib; {
  
positive.code:   };
  
    nativeBuildInputs = [ makeWrapper ];
    buildInputs = [ nim pcre ];
  
    patches = [
      (fetchpatch {
  
negative.code: { lib, nimPackages, fetchFromGitHub, fetchpatch, makeWrapper, pcre, tinycc }:
  
  nimPackages.buildNimPackage {
    pname = "nrpl";
    version = "20150522";
    nimBinOnly = true;
  
    src = fetchFromGitHub {
      owner  = "wheineman";
  