anchor.diff:          }
       );
     }
  -
  
positive.code: */
  
  { stdenv, lib, fetchurl, runCommand, writeText, buildEnv
  , callPackage, ghostscriptX, harfbuzz, poppler_min
  , makeWrapper, perl, python, ruby
  , useFixedHashes ? true
  , recurseIntoAttrs
  
negative.code: let
    # various binaries (compiled)
    bin = callPackage ./bin.nix {
      ghostscript = ghostscriptX;
      harfbuzz = harfbuzz.override {
        withIcu = true; withGraphite2 = true;
  