site.py on official python images is lacking standard functionality documented on the official python docs and available on standard python installations.
Specifically: the function site.getsitepackages does not exist.
Any help on that?
When reporting problems, please include relevant build URLs. Thanks.
Is it related to
or
Seems an issue with virtualenv? 
This is a problem with Virtualenv. It affects environments created with a Virtualenv that belongs to a Py2 installation.
It looks fixed in the latest Virtualenv 20.0.4 (checked locally in Windows and Bionic; Github has broken down – any requests that make changes produce 500 – so can’t check in Travis now).
@BanzaiMan you need to check all Py3 archives and rebuild those that have site.py under virtualenv subtree.