They fail to build and aren't included in the output anyway.
@ -17,7 +17,11 @@ stdenv.mkDerivation rec {
unzip cmake libGLU_combined freeglut libX11 xproto inputproto libXi
];
cmakeFlags = [ "-DBOX2D_INSTALL=ON" "-DBOX2D_BUILD_SHARED=ON" ];
cmakeFlags = [
"-DBOX2D_INSTALL=ON"
"-DBOX2D_BUILD_SHARED=ON"
"-DBOX2D_BUILD_EXAMPLES=OFF"
prePatch = ''
substituteInPlace Box2D/Common/b2Settings.h \