Fail creating an env for Python 3.8

[glenfant]

Environment :

• Ubuntu 18.04
• Python 3.8.0 from Deadsnake PPA
• Latest pew installed on Python 3.6.9 from Deadsnake PPA too

Running virtualenv with interpreter /usr/bin/python3.8
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/virtualenv.py", line 25, in <module>
    import distutils.spawn
ModuleNotFoundError: No module named 'distutils.spawn'
Error while trying to remove the /home/glenfant/.local/share/virtualenvs/c68a898c9d602fc env: 
No such file or directory

I have the same issue with pew new -p /usr/bin/python3.8

Both pew new and pew mktmpenv work perfectly when uilding Python3.6 or Python3.7 virtual envs.

Thank you again for my favorite virtual envs manager.