Okay, this looks like a zipimport issue. When I extract the "python37.zip" file containing the stdlib and reference the directory it works fine. But no matter what I do to the ZIP I can't get it to run.

It seems that zipimport either can't import .pyc files without a matching .py, or it can't import packages marked with __init__.pyc (I haven't gone deep enough, but adding encodings/__init__.py got me further).

This is a regression from 3.7.1.

Things to do:
* fix the regression (Serhiy?)
* add a regression test
* add a ".pyc-only stdlib in ZIP" test (I'll do this)
* remove the double vcruntime in ZIP issue (unrelated, so I'll just fix it)