New submission from kcdodd :
A change in behavior was made to the `ensurepip` module in Python 3.8.7 that
causes bootstrapping to break out of an isolated environment. This is relevant
to the assumption made in the `venv` module, which ran ensurepip as a
sub-process with the `-I` flag environment isolation to force installation in
the virtual environment directory.
In Python <= 3.8.6, ensurepip ran the bootstrap within the current interpreter,
so the environment remained isolated. But in Python >= 3.8.7 it creates a
second subprocess without the `-I` flag, and the un-isolated environment
appears to be restored for pip. This would then allow a search of any
additional paths, and prevent installation of pip and setuptools from being
installed in the venv environment directory if they are found somewhere else.
--
messages: 409334
nosy: kcdodd
priority: normal
severity: normal
status: open
title: ensurepip bootstrap breaks out of isolated environment
type: behavior
versions: Python 3.10, Python 3.11, Python 3.8, Python 3.9
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<https://bugs.python.org/issue46197>
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