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After a while of searching (maybe it's not enough, but I don't think I'm making progress doing that), I haven't been able to find information about compatibility of other Python implementations in virtualenv/virtualenvwrapper. By "other implementation" I mean things like PyPy, IronPython, Cython, Jython...

for example, I can create a virtualenv for a different python version using the following code .

mkvirtualenv -p /usr/bin/python2.6 new_venv

but when I tried to create a virtualenv for PyPy by:

mkvirtualenv -p /usr/bin/pypy new_venv

system throws some error.

EDIT: I'm using virtualenvwrapper-win. it throws

Running virtualenv with interpreter C:\pypy2-v5.8.0-win32\pypy.exe New pypy executable in C:\Users\fangming.zfm\Envs\test-123\bin\pypy.exe Installing setuptools, pip, wheel...done. system cannot find the path specified. system cannot find the path specified. system cannot find the path specified.

why we can't do this? is it because of lack of interest, or is it technically infeasible?

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  • What's the error? Commented Jun 28, 2017 at 10:10
  • Do you have setuptools, pip and wheel packages installed with pypy outside of virtual env? Commented Jun 28, 2017 at 12:12
  • @phd, I installed pip using pypy -m ensurepip based on what i saw here, but it seems still not solving my "system cannot find the path specified" problem. Commented Jun 28, 2017 at 12:20
  • Try pypy -m pip install -U setuptools pip wheel. Commented Jun 28, 2017 at 12:22
  • @phd, it's still the same error, now I wonder if I could dig deeper into that error message. Commented Jun 29, 2017 at 1:44

2 Answers 2

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Works for me:

$ mktmpenv -p pypy Running virtualenv with interpreter /usr/bin/pypy New pypy executable in /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/pypy Installing setuptools, pip, wheel...done. virtualenvwrapper.user_scripts creating /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/predeactivate virtualenvwrapper.user_scripts creating /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/postdeactivate virtualenvwrapper.user_scripts creating /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/preactivate virtualenvwrapper.user_scripts creating /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/postactivate virtualenvwrapper.user_scripts creating /home/phd/.virtualenvs/tmp-b29122e40f353f03/bin/get_env_details This is a temporary environment. It will be deleted when you run 'deactivate' $ python --version Python 2.7.8 (2.4.0+dfsg-3, Dec 20 2014, 13:30:11) [PyPy 2.4.0 with GCC 4.9.2]

What exactly is your error?

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The problem is due to pypy.exe being located under the /bin/ directory -- and not the Scripts directory (like virtualenvwrapper-win expects).

There's an issue for it (https://github.com/davidmarble/virtualenvwrapper-win/issues/30) and it should be relatively simple to fix.

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