anchor.diff:        dontAddPrefix = true;
   
         preBuild = "makeFlagsArray=(dictdir=$out/lib/aspell datadir=$out/lib/aspell)";
  +
  +      inherit postInstall;
   
         meta = {
           description = "Aspell dictionary for ${fullName}";
  
positive.code:   /* Function to compile an Aspell dictionary.  Fortunately, they all
       build in the exact same way. */
    buildDict =
      {shortName, fullName, src}:
  
      stdenv.mkDerivation {
        name = "aspell-dict-${shortName}";
  
negative.code:       url = mirror://gnu/aspell/dict/nl/aspell-nl-0.50-2.tar.bz2;
        sha256 = "0ffb87yjsh211hllpc4b9khqqrblial4pzi1h9r3v465z1yhn3j4";
      };
      # Emacs expects a language called "nederlands".
      postInstall = ''
        echo "add nl.rws" > $out/lib/aspell/nederlands.multi
      '';
    };
      
    ru = buildDict {
  