Hello Python Ideas, Would there be any interest in upstreaming a patch allowing virtualenv to be inherited in core python ? I'm working with a company that uses such an internal patch and would be ok with me spending some time trying to upstream it. When creating a venv, this let you point to "parents" venvs that will be used to search for existing packages; thus potentially making the creation of large venvs with a common base faster, and decreasing disk space usage. I am aware that there are solution around like, https://virtualenvwrapper.readthedocs.io/en/latest/command_ref.html#add2virt..., or modifying PYTHONPATH , but my question is more about whether such a change has a chance of being accepted in Core Python; and whether there is a need for a pep,, or simply a request for enhancement on bpo and a pull-request. Thanks, -- Matthias