anchor.diff:      mkdir -p $out/bin/
       cp prun pplot prun.pbench pplot.pbench timeout.out $out/bin/
       wrapProgram $out/bin/pplot \
  -      --prefix PATH ":" ${texlive}/bin \
  +      --prefix PATH ":" ${myTexlive}/bin \
         --prefix PATH ":" ${R}/bin
       mkdir -p $out/lib/
       cp lib/*.ml $out/lib/
  
positive.code: 
    buildInputs =
      let docs =
        if buildDocs then [ pandoc texlive] else [];
      in
      [ ocaml gcc R texlive makeWrapper ] ++ docs;
  
    buildPhase =
      let docs = 
  
negative.code: { pkgs   ? import <nixpkgs> {},
    stdenv ? pkgs.stdenv,
    pbenchSrc ? ../.,
    gcc ? pkgs.gcc,
    pandoc ? pkgs.pandoc,
    R ? pkgs.R,
    ocaml ? pkgs.ocaml,
    myTexlive ? pkgs.texlive.combined.scheme-small,
    makeWrapper ? pkgs.makeWrapper,
    buildDocs ? false
  }:
  