[PR #6756/72d3d4b1 backport][3.8] Fix pip reinstallation on windows due to constraints #6911
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This is a backport of PR #6756 as merged into master (72d3d4b).
What do these changes do?
Fix for constantly failing CI on windows agents.
Description
We have pinned pip version in constraints.txt file:
aiohttp/requirements/constraints.txt
Line 260 in 08ca779
So when you call
pip install ... -c constraints.txt
it will downgrade/upgrade pip depending on the currently installed version. This works fine on all platforms except windows, which forces you to explicitly usepython -m pip install ...
when dealing with the pip package itself.Since
python -m pip install ...
command is a completely legit replacement forpip install ...
(examples from the pip wiki), I decided to updateMakefile
with it.