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installer: improve support of Python pre-releases #10516

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Merged
radoering merged 1 commit into from
Aug 27, 2025
Merged

installer: improve support of Python pre-releases #10516

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5 changes: 4 additions & 1 deletion src/poetry/puzzle/provider.py
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Original file line number Diff line number Diff line change
Expand Up @@ -202,9 +202,12 @@ def use_environment(self, env: Env) -> Iterator[Provider]:
original_python_constraint = self._package_python_constraint

self._env = env
# We use the stable version here to improve support of environments of Python pre-release
# versions, e.g. Python 3.14rc2. Without using the stable version here, a dependency with
# a marker like `python_version >= "3.14"` would not be installed.
self._package_python_constraint = Version.parse(
env.marker_env["python_full_version"]
)
).stable

try:
yield self
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