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Discover and prefer the parent interpreter when invoked with python -m uv (#3736)

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Closes #2222
Closes https://github.com/astral-sh/uv/issues/2058
Replaces https://github.com/astral-sh/uv/pull/2338
See also https://github.com/astral-sh/uv/issues/2649

We use an environment variable (`UV_INTERNAL__PARENT_INTERPRETER`) to
track the invoking interpreter when `python -m uv` is used. The parent
interpreter is preferred over all other sources (though it will be
skipped if it does not meet a `--python` request or if `--system` is
used and it belongs to a virtual environment). We warn if `--system` is
not provided and this interpreter would mutate system packages, but
allow it.
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Zanie Blue 2024-05-22 12:34:24 -04:00 • committed by GitHub
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3
python/uv/__main__.py
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@ -31,6 +31,9 @@ def _run() -> None:
if venv:
env.setdefault("VIRTUAL_ENV", venv)
# Let `uv` know that it was spawned by this Python interpreter
env["UV_INTERNAL__PARENT_INTERPRETER"] = sys.executable
if sys.platform == "win32":
import subprocess