anchor.diff:    src = fetchurl {
       url = "${baseUrl}/${name}.tar.xz";
       hashOutput = false;
  -    sha256 = "1fcedc27d4d6081105cdf35606cb3f809523423a6cf9e3c23cead3525d6ae8d9";
  +    sha256 = "a2971a23bf15bbd9ddcd173141b15504e51ddc1d5a0a0144b00a6a8b14a62fed";
     };
   
     buildInputs = [
  
positive.code:   inherit (stdenv.lib)
      replaceChars;
  
    version = "9.23";
    versionNoP = replaceChars ["."] [""] version;
  
    fonts = stdenv.mkDerivation {
  
negative.code:   '';
  
    configureFlags = [
      "--enable-dynamic"
      "--with-system-libtiff"
      "--with-drivers=ALL"
    ];
  