anchor.diff:  
     configureFlags = [
       "--disable-maintainer-mode"
  -    "--enable-largefile"
       "--disable-apidoc"
  -    "--${boolWt (libdvdcss != null)}-libdvdcss"
  +    "--with-libdvdcss"
     ];
   
     postInstall = ''
  -    ln -sv $out/include/dvdread $out/include/libdvdread
  +    ln -sv "$out"/include/dvdread "$out"/include/libdvdread
     '';
   
     passthru = {
  
positive.code:   src = fetchurl {
      url = "mirror://videolan/libdvdread/${version}/${name}.tar.bz2";
      hashOutput = false;
      sha256 = "b33b1953b4860545b75f6efc06e01d9849e2ea4f797652263b0b4af6dd10f935";
    };
  
    buildInputs = [
  
negative.code:         outputHash
          outputHashAlgo
          urls;
        fullOpts = {
          sha256Urls = map (n: "${n}.sha256") src.urls;
          pgpsigUrls = map (n: "${n}.asc") src.urls;
          pgpKeyFingerprints = [
            # VideoLAN Release Signing Key
            "65F7 C6B4 206B D057 A7EB  7378 7180 713B E58D 1ADC"
          ];
        };
        failEarly = true;
      };
    };
  