anchor.diff:       sha256 = "1iv6k0dwdzg5nnzw2mcgcl663q4f7p2kj7nhs8afnsikrzxxgsi4";
     };
   
  -  cmakeFlags = [ "-DOGRE_BUILD_SAMPLES=${toString withSamples}" ]
  +  cmakeFlags = [ "-DOGRE_BUILD_DEPENDENCIES=OFF" "-DOGRE_BUILD_SAMPLES=${toString withSamples}" ]
       ++ map (x: "-DOGRE_BUILD_PLUGIN_${x}=on")
              ([ "BSP" "OCTREE" "PCZ" "PFX" ] ++ lib.optional withNvidiaCg "CG")
       ++ map (x: "-DOGRE_BUILD_RENDERSYSTEM_${x}=on") [ "GL" ];
  
positive.code: , libXxf86vm, libICE
  , unzip
  , libXrender
  , withNvidiaCg ? false, nvidia_cg_toolkit
  , withSamples ? false }:
  
  
negative.code:      libX11 libXmu libSM
       libXxf86vm libICE
       libXrender
       SDL2
     ] ++ lib.optional withNvidiaCg nvidia_cg_toolkit;
  
    meta = {
  