Is PyPy supported?

[ghuls]

Is PyPy supported?

I tried the sinple-extension example, but it does not seem to work:

cd examples/simple-extension

$ maturin develop  -b cffi

❯ pypy
Python 3.7.12 | packaged by conda-forge | (44db2626, Oct 29 2021, 16:13:40)
[PyPy 7.3.7 with GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>> import numpy as np
>>>> import rust_ext
>>>> rust_ext.axpy(2.0, np.array([0.0, 1.0]), np.array([2.0, 3.0]))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'rust_ext' has no attribute 'axpy'
>>>> 

[davidhewitt]

I'm not aware of reasons why it shouldn't be supported. Which maturin version are you using and why do you use -b cffi?

[adamreichold]

I am adding basic tests for PyPy on Linux to our CI and will tentatively close this if that works out. Please feel free to re-open if the problem persists.

[ghuls]

I'm not aware of reasons why it shouldn't be supported. Which maturin version are you using and why do you use -b cffi?

At the time I couldn't get the project that uses rust-numpy to compile when targeting PyPy, as PyO3 was missing PyPyObject_HasAttr to PyObject_HasAttr mapping, so hasattr in my code did not work with PyPy:
PyO3/pyo3#2025