anchor.diff:  
         # Ensure that gstoraster can find gs in $PATH.
         substituteInPlace filter/gstoraster.c --replace execve execvpe
  +
  +      # Patch shebangs of generated build scripts
  +      patchShebangs filter
       '';
   
     postInstall =
  
positive.code:     description = "Backends, filters, and other software that was once part of the core CUPS distribution but is no longer maintained by Apple Inc";
      license = stdenv.lib.licenses.gpl2;
      platforms = stdenv.lib.platforms.linux;
    };
  }
  
negative.code: 
  in stdenv.mkDerivation rec {
    name = "cups-filters-${version}";
    version = "1.14.0";
  
    src = fetchurl {
      url = "http://openprinting.org/download/cups-filters/${name}.tar.xz";
      sha256 = "1v553wvr8qdwb1g04if7cw1mfm42vs6xfyg0cvzvbng6yr6jg93s";
    };
  
    nativeBuildInputs = [ pkgconfig makeWrapper ];
  
    buildInputs = [
      cups poppler poppler_utils fontconfig libjpeg libpng perl
      ijs qpdf dbus avahi ghostscript mupdf
    ];
  
    configureFlags = [
  