cffi not working with pypy: ImportError: No module named zstd_cffi

[rtkbkish]

We run our infrastructure using pypy and are trying to incorporate zstd into our pipeline.

Import doesn't work. It looks like the cffi object is created incorrectly

$virtualenv -p pypy2-v6.0.0-linux64/bin/pypy
pypy        pypy.debug
$virtualenv -p pypy2-v6.0.0-linux64/bin/pypy pypy6-env
Running virtualenv with interpreter pypy2-v6.0.0-linux64/bin/pypy
New pypy executable in /home/bkish/pypy6-env/bin/pypy
Installing setuptools, pip, wheel...done.
$source pypy6-env/bin/activate
$pip install zstandard
Collecting zstandard
  Using cached https://files.pythonhosted.org/packages/29/21/4612a4b9e628d61aa045558ff008452378b5a333e5a64f7de29dee8b1e77/zstandard-0.10.1.tar.gz
Requirement already satisfied: cffi>=1.11 in ./pypy2-v6.0.0-linux64/lib_pypy (from zstandard) (1.11.5)
Building wheels for collected packages: zstandard
  Running setup.py bdist_wheel for zstandard ... done
  Stored in directory: /home/bkish/.cache/pip/wheels/e6/f1/ac/4498937124aecdc0b12b9ac6de1984619429b02b476427761e
Successfully built zstandard
Installing collected packages: zstandard
Successfully installed zstandard-0.10.1
$python
Python 2.7.13 (ab0b9caf307d, Apr 24 2018, 18:04:42)
[PyPy 6.0.0 with GCC 6.2.0 20160901] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>> import zstandard
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/bkish/pypy6-env/site-packages/zstandard/__init__.py", line 38, in <module>
    from zstd_cffi import *
ImportError: No module named zstd_cffi
>>>>

$pip uninstall zstandard
Uninstalling zstandard-0.10.1:
  Would remove:
    /home/bkish/pypy6-env/site-packages/_zstd_cffi.pypy-41.so
    /home/bkish/pypy6-env/site-packages/zstandard-0.10.1.dist-info/*
    /home/bkish/pypy6-env/site-packages/zstandard/*
    /home/bkish/pypy6-env/site-packages/zstd.pypy-41.so
Proceed (y/n)? y
  Successfully uninstalled zstandard-0.10.1
$

[aawise]

Same issue with pypy3 / cffi 1.11.5. Tested zstandard versions from 0.9 to 0.10.1

[indygreg]

I thought this would have been fixed by 0b010fd. Perhaps we're missing something in setup.py with regards to this file...

[aawise]

Just took a look. It seems that adding py_modules = ['zstd_cffi'] to the setup call fixed the problem for me.

[indygreg]

This will be fixed in 0.10.2.