macOS Big Sur, could not load OpenGL library

[harripj]

Hi,

I am experiencing a problem on macOS Big Sur (11.1), where I am trying to import pyopengl and the following error occurs when installing through conda (and happens with reinstallation too):

SafetyError: The package for pyopengl located at /opt/anaconda3/pkgs/pyopengl-3.1.5-py_0
appears to be corrupted. The path 'site-packages/OpenGL/platform/ctypesloader.py'
has an incorrect size.
  reported size: 3402 bytes
  actual size: 3476 bytes

I am running pyopengl 3.1.5 from the conda-forge repository, and this error occurs for me with both Python 3.8 and 3.9.

Any help or tips would be appreciated!

[match08]

me too

[lookcat]

ctypesloader.py

def _loadLibraryWindows(dllType, name, mode):
    """Load a given library for Windows systems

    returns the ctypes C-module object
    """
    fullName = None
    try:
#        fullName = util.find_library( name )
#        print("fullName:", fullName)
        if name == 'OpenGL':
            fullName = '/System/Library/Frameworks/OpenGL.framework/OpenGL'
#            fullName = '/usr/local/Cellar/glew/2.2.0_1/lib/libGLEW.dylib'
        elif name == 'GLUT':
            fullName = '/System/Library/Frameworks/GLUT.framework/GLUT'
#
        if fullName is not None:
            name = fullName
        elif os.path.isfile( os.path.join( DLL_DIRECTORY, name + '.dll' )):
            name = os.path.join( DLL_DIRECTORY, name + '.dll' )
    except Exception as err:
        _log.info( '''Failed on util.find_library( %r ): %s''', name, err )
        # Should the call fail, we just try to load the base filename...
        pass
    try:
        print("ddlType", name, mode)
        return dllType( name, mode )
    except Exception as err:
        err.args += (name,fullName)
        raise

it's ok when you use maocs opengl2.0.

I want to use the opengl3.3, I have no idea.