Broadcast WM_SETTINGCHANGE on uv tool update-shell #17404
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samypr100
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This MR contains the following updates: | Package | Update | Change | |---|---|---| | [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.9.24` → `0.9.26` | 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> ### [`v0.9.26`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0926) [Compare Source](astral-sh/uv@0.9.25...0.9.26) Released on 2026-01-15. ##### Python - Add CPython 3.15.0a5 ##### Enhancements - Add a hint to update uv when a managed Python download is not found ([#​17461](astral-sh/uv#17461)) - Improve cache initialization failure error message ([#​17469](astral-sh/uv#17469)) - Improve error message for abi3 wheels on free-threaded Python ([#​17442](astral-sh/uv#17442)) - Add support for `--no-sources-package` ([#​14910](astral-sh/uv#14910)) ##### Preview features - Add `METADATA.json` and `WHEEL.json` in uv build backend ([#​15510](astral-sh/uv#15510)) - Add support for GCS request signing ([#​17474](astral-sh/uv#17474)) - Adjust the process ulimit to the maximum allowed on startup ([#​17464](astral-sh/uv#17464)) ##### Bug fixes - Lock to avoid concurrent refresh of pyx tokens ([#​17479](astral-sh/uv#17479)) ##### Documentation - Add linting and formatting instructions to the CONTRIBUTING guide ([#​17470](astral-sh/uv#17470)) - Avoid rendering `pyproject.toml` examples for more system-level settings ([#​17462](astral-sh/uv#17462)) ### [`v0.9.25`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0925) [Compare Source](astral-sh/uv@0.9.24...0.9.25) Released on 2026-01-13. ##### Python - Add CPython 3.15.0a4 - Upgrade Tcl/Tk used by CPython to 9.0 ##### Enhancements - Add `--compile-bytecode` to `uv python install` and `uv python upgrade` to compile the standard library ([#​17088](astral-sh/uv#17088)) - Allow disabling `exclude-newer` per package ([#​16854](astral-sh/uv#16854)) - Broadcast `WM_SETTINGCHANGE` on `uv tool update-shell` ([#​17404](astral-sh/uv#17404)) ##### Preview features - Detect workspace from `uv run` target ([#​17423](astral-sh/uv#17423)) ##### Bug fixes - Avoid unwrapping size for file responses ([#​17434](astral-sh/uv#17434)) - Use keyring authentication when retrieving `tool@latest` version ([#​17448](astral-sh/uv#17448)) - Use latest Pyodide version for each python version ([#​17372](astral-sh/uv#17372)) - Improve trampoline file handle closing ([#​17374](astral-sh/uv#17374)) - Fix error message when installing musl python on armv7 ([#​17213](astral-sh/uv#17213)) </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:eyJjcmVhdGVkSW5WZXIiOiI0Mi44MC4xIiwidXBkYXRlZEluVmVyIjoiNDIuODEuOCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90IiwiYXV0b21hdGlvbjpib3QtYXV0aG9yZWQiLCJkZXBlbmRlbmN5LXR5cGU6OnBhdGNoIl19-->
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Summary
Closes #17331
Certain applications on windows expect to be notified when environment variables change such as conhost.exe (traditional cmd.exe host).
Without this notification conhost.exe will not pick up changes to environment variables regardless of how many times conhost.exe is re-launched after running
uv tool update-shell.Test Plan
Before this change
%USERPROFILE%\.local\binfrom environment variables via UI (which sendsWM_SETTINGCHANGE)%SYSTEMROOT%\System32\conhost.exeand attempted to run any tool preivously installed. It fails to find any.uv tool update-shell. ConfirmedHKEY_CURRENT_USER\Environment\Pathwas updated in registry.%SYSTEMROOT%\System32\conhost.exesession. Fails to find installed tools.After this change
%USERPROFILE%\.local\binfrom environment variables via UI (which sendsWM_SETTINGCHANGE)%SYSTEMROOT%\System32\conhost.exeand attempted to run any tool preivously installed. It fails to find any.uv tool update-shell. ConfirmedHKEY_CURRENT_USER\Environment\Pathwas updated in registry.%SYSTEMROOT%\System32\conhost.exesession. Finds the installed tools.