Set base executable when returning virtual environment #11209
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zanieb
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## Summary This is attempting to solve the same problem surfaced in #11208 and #11209. However, those PRs only worked for our own managed Pythons. In Gentoo, for example, they disable the managed Pythons, which led to failures in the test suite, because the "base Python" returned after creating a virtual environment would differ from the "base Python" that you get after _querying_ an existing virtual environment. The fix here is to apply our same base Python normalization and discovery logic, to non-standalone / non-managed Pythons. We continue to use `sys._base_executable` for such Pythons when creating the virtualenv, but when _caching_, we perform this second discovery step. Closes #11237.
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This MR contains the following updates: | Package | Update | Change | |---|---|---| | [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.5.27` -> `0.5.29` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>astral-sh/uv (astral-sh/uv)</summary> ### [`v0.5.29`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0529) [Compare Source](astral-sh/uv@0.5.28...0.5.29) ##### Enhancements - Add `--bare` option to `uv init` ([#​11192](astral-sh/uv#11192)) - Add support for respecting `VIRTUAL_ENV` in project commands via `--active` ([#​11189](astral-sh/uv#11189)) - Allow the project `VIRTUAL_ENV` warning to be silenced with `--no-active` ([#​11251](astral-sh/uv#11251)) ##### Python The managed Python distributions have been updated, including: - CPython 3.12.9 - CPython 3.13.2 - pkg-config files are now relocatable See the [`python-build-standalone` release notes](https://github.com/astral-sh/python-build-standalone/releases/tag/20250205) for more details. ##### Bug fixes - Always use base Python discovery logic for cached environments ([#​11254](astral-sh/uv#11254)) - Use a flock to avoid concurrent initialization of project environments ([#​11259](astral-sh/uv#11259)) - Fix handling of `--all-groups` and `--no-default-groups` flags ([#​11224](astral-sh/uv#11224)) ##### Documentation - Minor touchups to the Docker provenance docs ([#​11252](astral-sh/uv#11252)) - Move content from the `mkdocs.public.yml` into the template ([#​11246](astral-sh/uv#11246)) ### [`v0.5.28`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0528) [Compare Source](astral-sh/uv@0.5.27...0.5.28) ##### Bug fixes - Allow discovering virtual environments from the first interpreter found on the `PATH` ([#​11218](astral-sh/uv#11218)) - Clear ephemeral overlays when running tools ([#​11141](astral-sh/uv#11141)) - Disable SSL in Git commands for `--allow-insecure-host` ([#​11210](astral-sh/uv#11210)) - Fix hardlinks in tar unpacking ([#​11221](astral-sh/uv#11221)) - Set base executable when returning virtual environment ([#​11209](astral-sh/uv#11209)) - Use base Python for cached environments ([#​11208](astral-sh/uv#11208)) ##### Documentation - Add documentation on verifying Docker image attestations ([#​11140](astral-sh/uv#11140)) - Add `last updated` to documentation ([#​11164](astral-sh/uv#11164)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS4xNTguMSIsInVwZGF0ZWRJblZlciI6IjM5LjE1OC4xIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJSZW5vdmF0ZSBCb3QiXX0=-->
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Summary
I'm not sure that this has much of an effect in practice, but currently, when we return a virtual environment, the
sys_base_executableof the parent ends up being retained assys_base_executableof the created environment. But these can be, like, subtly different? If you have a symlink to a Python, then for the symlink,sys_base_executablewill be equal tosys_executable. But when you create a virtual environment for that interpreter, we'll sethometo the resolved symlink, and sosys_base_executablewill be the resolved symlink too, in general. Anyway, this means that we should now have a consistent value between (1) returningVirtualenvfrom the creation routine and (2) querying the created interpreter.