[3.9] bpo-40448: ensurepip: Do not use cache (GH-19812) #20893
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ensurepip optionally installs or upgrades 'pip' and 'setuptools' using the version of those modules bundled with Python. The internal PIP installation routine by default temporarily uses its cache, if it exists. This is undesirable as Python builds and installations may be independent of the user running the build, whilst PIP cache location is dependent on the user's environment and outside of the build environment. At the same time, there's no value in using the cache while installing bundled modules. This change disables PIP caching when used in ensurepip. (cherry picked from commit 4a3a682) Co-authored-by: Krzysztof Konopko <[email protected]>
ned-deily
approved these changes
Jun 15, 2020
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@kkonopko and @ned-deily: Status check is done, and it's a success ✅ . |
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ensurepip optionally installs or upgrades 'pip' and 'setuptools' using
the version of those modules bundled with Python. The internal PIP
installation routine by default temporarily uses its cache, if it
exists. This is undesirable as Python builds and installations may be
independent of the user running the build, whilst PIP cache location
is dependent on the user's environment and outside of the build
environment.
At the same time, there's no value in using the cache while installing
bundled modules.
This change disables PIP caching when used in ensurepip.
(cherry picked from commit 4a3a682)
Co-authored-by: Krzysztof Konopko [email protected]
https://bugs.python.org/issue40448
Automerge-Triggered-By: @ned-deily