anchor.diff:  { enableMultiThreading ? true
   , enableInventor       ? false
  -, enableQT             ? false
  +, enableQT             ? false # deprecated name
  +, enableQt             ? enableQT
   , enableXM             ? false
   , enableOpenGLX11      ? true
   , enablePython         ? false
  
positive.code: , soxt
  , libXpm
  
  # For enableQT, enableXM, enableOpenGLX11, enableRaytracerX11.
  , libGLU, libGL
  , xlibsWrapper
  , libXmu
  
negative.code: 
    nativeBuildInputs =  [
      cmake
    ] ++ lib.optionals enableQt [
      wrapQtAppsHook
    ];
  
    dontWrapQtApps = !enableQt;
  
    buildInputs = [ libGLU xlibsWrapper libXmu ]
      ++ lib.optionals enableInventor [ libXpm coin3d soxt motif ]
  