anchor.diff:    NIX_CFLAGS_COMPILE = "-fcommon";
   
     installPhase = ''
  -    # the makefile doesn't have a sensible install target, so we hav to do it ourselves
  +    runHook preInstall
  +
  +    # the makefile doesn't have a sensible install target, so we have to do it ourselves
       mkdir -p $out/bin
       cp sil $out/bin/sil
  -    # Wrap the program to set a user-local ANGBAND_PATH, and run the setup script to copy files into place
  +
  +    # Wrap the program to set a user-local ANGBAND_PATH, and run the setup script to copy files into place.
       # We could just use the options for a user-local save and scores dir, but it tried to write to the
       # lib directory anyway, so we might as well give everyone a copy
       wrapProgram $out/bin/sil \
  -      --run "set -u" \
         --run "export ANGBAND_PATH=\$HOME/.sil" \
         --run "${setup} ${src}/Sil/lib"
  +
  +    runHook postInstall
     '';
   
  +  passthru.tests = {
  +    saveDirCreation = pkgs.runCommand "save-dir-creation" {} ''
  +      HOME=$(pwd) ${lib.getExe pkgs.sil} --help
  +      test -d .sil && touch $out
  +    '';
  +  };
  +
     meta = {
  -    description = "A rouge-like game set in the first age of Middle-earth";
  +    description = "A rogue-like game set in the First Age of Middle-earth";
       longDescription = ''
  -      A game of adventure set in the first age of Middle-earth, when the world still
  -      rang with elven song and gleamed with dwarven mail.
  +      A game of adventure set in the First Age of Middle-earth, when the world still
  +      rang with Elven song and gleamed with Dwarven mail.
   
         Walk the dark halls of Angband.  Slay creatures black and fell.  Wrest a shining
         Silmaril from Morgoth’s iron crown.
       '';
       homepage = "http://www.amirrorclear.net/flowers/game/sil/index.html";
       license = lib.licenses.gpl2;
  -    maintainers = [ lib.maintainers.michaelpj ];
  +    maintainers = with lib.maintainers; [ michaelpj kenran ];
       platforms = lib.platforms.linux;
  +    mainProgram = "sil";
     };
   }
  
positive.code:   src = fetchzip {
      url = "http://www.amirrorclear.net/flowers/game/sil/Sil-130-src.zip";
      sha256 = "1amp2mr3fxascra0k76sdsvikjh8g76nqh46kka9379zd35lfq8w";
      stripRoot=false;
    };
  
    nativeBuildInputs = [ makeWrapper ];
  
negative.code: 
    makefile = "Makefile.std";
  
    postPatch = ''
      # Allow usage of ANGBAND_PATH
      substituteInPlace config.h --replace "#define FIXED_PATHS" ""
    '';
  