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Not true. It supports CPython C modules since 2010 http://morepypy.blogspot.it/2010/04/using-cpython-extension-... The problem is CPyExt is not so fast and works only if PyPy implements the required functions used by the C module

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A lot of C modules rely on CPython specifics, PyPy cannot support, performance of the PyPy C API is horrible which is a huge problem given that C extensions are mainly used to improve performance and embedding PyPy isn't possible either.

CPyExt is more of a hack you use until you have ctypes/cffi bindings.

It's incomplete and there's no interest in finishing it.

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