anchor.diff:  , autoreconfHook
   , pkg-config
   , texinfo
  +, bash
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:     })
    ];
  
    postPatch = lib.optionalString (psutils != null) ''
      substituteInPlace src/preproc/html/pre-html.cpp \
        --replace "psselect" "${psutils}/bin/psselect"
    '' + lib.optionalString (netpbm != null) ''
  
negative.code:       --replace "@PNMTOPS_NOSETPAGE@" "${lib.getBin netpbm}/bin/pnmtops -nosetpage"
    '';
  
    strictDeps = true;
    buildInputs = [ ghostscript psutils netpbm perl bash ];
    nativeBuildInputs = [ autoreconfHook pkg-config texinfo ];
  
    # Builds running without a chroot environment may detect the presence
  