anchor.diff:    ];
   
     # To be able to find <Xft.h>
  -  NIX_CFLAGS_COMPILE = "-I${libXft.dev}/include/X11";
  +  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.isLinux "-I${libXft.dev}/include/X11";
   
     # Binaries look for LuaFileSystem library (lfs.so) at runtime
     postInstall = ''
       wrapProgram $out/bin/wordgrinder --set LUA_CPATH "${lua52Packages.luafilesystem}/lib/lua/5.2/lfs.so";
  +  '' + stdenv.lib.optionalString stdenv.isLinux ''
       wrapProgram $out/bin/xwordgrinder --set LUA_CPATH "${lua52Packages.luafilesystem}/lib/lua/5.2/lfs.so";
     '';
   
  
positive.code:     homepage = https://cowlark.com/wordgrinder;
      license = licenses.mit;
      maintainers = with maintainers; [ matthiasbeyer ];
      platforms = with stdenv.lib.platforms; linux;
    };
  }
  
negative.code:     "PREFIX=$(out)"
      "LUA_INCLUDE=${lua52Packages.lua}/include"
      "LUA_LIB=${lua52Packages.lua}/lib/liblua.so"
    ] ++ stdenv.lib.optional stdenv.isLinux "XFT_PACKAGE=--libs=\{-lX11 -lXft\}";
  
    dontUseNinjaBuild = true;
    dontUseNinjaInstall = true;
  