Fix pip bootstrap on Python 3.9: use version-pinned get-pip.py#253
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gillespeiffer-db merged 1 commit intoJun 4, 2026
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pip 26.1 raised the minimum supported Python in the rolling https://bootstrap.pypa.io/get-pip.py to 3.10, so it now errors out on Python 3.9. Switch to the version-pinned URL that pip's own error message recommends, matching the existing release-10.4-LTS fix that did the same for Python 3.8.
madsager-db
approved these changes
Jun 4, 2026
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What
ubuntu/python/Dockerfilebootstraps pip from the rollinghttps://bootstrap.pypa.io/get-pip.py. pip 26.1 raised that script's minimum to Python 3.10, so on this Python 3.9 release line it now errors:This breaks the
pythonimage build.Change
Use the version-pinned bootstrap URL that pip's own error message recommends:
(
python_versionis already3.9here.) This is the same fix already shipped onrelease-10.4-LTSfor Python 3.8 in #222, when pip 25.1 dropped 3.8. The pinned URL is frozen upstream for the 3.9 line, so future pip releases dropping newer Python versions can't break it again.Testing
min_version = (3, 9)(the rolling script is now(3, 10)).pythonimage build will be validated via the standard image rebuild.