anchor.diff:  
     buildInputs = [ cmake lzma boost libdevil zlib p7zip openal libvorbis freetype SDL2
       xorg.libX11 xorg.libXcursor libGLU_combined glew asciidoc libxslt docbook_xsl curl makeWrapper
  -    docbook_xsl_ns systemd libunwind glibc.dev glibc.static which minizip ]
  +    docbook_xsl_ns systemd libunwind which minizip ]
       ++ stdenv.lib.optional withAI jdk
       ++ stdenv.lib.optional withAI python;
   
  
positive.code:     license = licenses.gpl2;
      maintainers = [ maintainers.phreedom maintainers.qknight maintainers.domenkozar ];
      platforms = platforms.linux;
      broken = true;
    };
  }
  
negative.code: { stdenv, fetchurl, cmake, lzma, boost, libdevil, zlib, p7zip
  , openal, libvorbis, glew, freetype, xorg, SDL2, libGLU_combined, binutils
  , asciidoc, libxslt, docbook_xsl, docbook_xsl_ns, curl, makeWrapper
  , jdk ? null, python ? null, systemd, libunwind, which, minizip
  , withAI ? true # support for AI Interfaces and Skirmish AIs
  }:
  
  