anchor.diff:  
       buildInputs = [
         irrlicht luajit jsoncpp gettext freetype sqlite curl bzip2 ncurses
  +      gmp libspatialindex
       ] ++ optionals buildClient [
         libpng libjpeg libGLU libGL openal libogg libvorbis xorg.libX11 libXxf86vm
       ] ++ optionals buildServer [
  
positive.code: { stdenv, fetchFromGitHub, cmake, irrlicht, libpng, bzip2, curl, libogg, jsoncpp
  , libjpeg, libXxf86vm, libGLU, libGL, openal, libvorbis, sqlite, luajit
  , freetype, gettext, doxygen, ncurses, graphviz, xorg
  , leveldb, postgresql, hiredis
  }:
  
  
negative.code:   };
  
    v5 = {
      version = "5.1.1";
      sha256 = "0cjj63333b7j4ydfq0h9yc6d2jvmyjd7n7zbd08yrf0rcibrj2k0";
      dataSha256 = "1r9fxz2j24q74a9injvbxbf2xk67fzabv616i676zw2cvgv9hn39";
    };
  
  