how to create virtualenv with pypy?

For windows this worked for me :

python -m virtualenv -p <Your PYPY installed path\pypy3.exe> <venv_name>

I got the same error on Windows using virtualenv 1.8.2. Also similar problems with 1.9 and 1.10. What worked for me was to run it once to make the directory, copy missing files, then run again to complete it.

virtualenv -p c:\bin\pypy\pypy.exe pypy
copy c:\bin\pypy\lib_pypy \virtualenvs\pypy
copy c:\bin\pypy\lib-python \virtualenvs\pypy
virtualenv -p c:\bin\pypy\pypy.exe pypy

This appears to be a regression in 1.8.4. While trying this out on my system everything worked fine with virtualenv 1.8.2, then I upgraded and now I get the same error as you.