Pin dependency versions and constrain them with pip constraints files
domain: python-dependency-management · 3 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Pin exact versions inline, for example python -m pip install requests==2.32.3, or with a range such as requests>=2.31,<3.
Apply global version ceilings with a constraints file via python -m pip install -c constraints.txt <package>.
For highly repeatable installs add --require-hashes, which is implied automatically once a hash is present in the requirements file.
Known gotchas
Constraint files control versions only and do not trigger installation; they cannot be editable and cannot specify extras.
A requirements entry using the direct URL form, such as OtherDependency @ git+https://<host>/<repo>@<tag>, overrides a transitive dependency version.
Build-only constraints (for example constraining setuptools or Cython during a source build) are set with --build-constraint or the PIP_BUILD_CONSTRAINT environment variable.
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