anchor.diff:      (builtins.attrNames (builtins.removeAttrs x helperArgNames));
     sourceInfo = rec {
       baseName="warmux";
  -    version="11.01";
  +    version="11.04.1";
       name="${baseName}-${version}";
       url="http://download.gna.org/${baseName}/${name}.tar.bz2";
  -    hash="1f063yaab08gflh4hnd8clb4as41ayfphi4q0cmi8syjiaap2qgh";
  +    hash="1vp44wdpnb1g6cddmn3nphc543pxsdhjis52mfif0p2c7qslz73q";
     };
   in
   rec {
  
positive.code: x@{builderDefsPackage
    , curl, gnutls, fribidi, libpng, SDL, SDL_gfx, SDL_image, SDL_mixer
    , SDL_net, SDL_ttf, libunwind, libX11, xproto, libxml2, pkgconfig
    , gettext, intltool, libtool, perl
  
negative.code: 
    /* doConfigure should be removed if not needed */
    phaseNames = ["doConfigure" "doMakeInstall"];
  
    configureFlags = "CFLAGS=\"-include ${zlib}/include/zlib.h\"";
  
    meta = {
      description = "Ballistics turn-based battle game between teams";
      maintainers = with a.lib.maintainers;
  