Fix handling of UV_NO_SYNC=1 uv run ...#17391
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zanieb merged 2 commits intoastral-sh:mainfrom Jan 9, 2026
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This test demonstrates issue astral-sh#17390 where setting `UV_NO_SYNC=1` environment variable does not prevent `uv run` from syncing the environment. The root cause is that `RunSettings::resolve()` doesn't use `resolve_flag()` to combine the CLI argument with the environment variable, unlike other commands like `uv add`, `uv remove`, and `uv version` which handle it correctly.
The `RunSettings::resolve()` function was passing the `no_sync` CLI argument directly without using `resolve_flag()` to combine it with the `UV_NO_SYNC` environment variable. This fix adds `resolve_flag(no_sync, "no-sync", environment.no_sync)` to properly resolve the flag from both CLI and environment variable sources, matching how other commands (add, remove, version) already handle this flag. Fixes astral-sh#17390
zanieb
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UV_NO_SYNC=1 uv run ...UV_NO_SYNC=1 uv run ...
charliermarsh
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Jan 9, 2026
tmeijn
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Jan 12, 2026
This MR contains the following updates: | Package | Update | Change | |---|---|---| | [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.9.22` → `0.9.24` | 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> ### [`v0.9.24`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0924) [Compare Source](astral-sh/uv@0.9.23...0.9.24) Released on 2026-01-09. ##### Bug fixes - Fix handling of `UV_NO_SYNC=1 uv run ...` ([#​17391](astral-sh/uv#17391)) - Rebuild dynamic distribution when version changes with `--no-cache` ([#​17387](astral-sh/uv#17387)) ##### Documentation - Add Rust language classifier ([#​17389](astral-sh/uv#17389)) ### [`v0.9.23`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0923) [Compare Source](astral-sh/uv@0.9.22...0.9.23) Released on 2026-01-09. ##### Enhancements - Only write portable paths in `RECORD` files ([#​17339](astral-sh/uv#17339)) - Support relative paths in `UV_PYTHON_BIN_DIR` and `UV_TOOL_BIN_DIR` ([#​17367](astral-sh/uv#17367)) ##### Preview features - Enable uploads to S3 via pre-signed URLs ([#​17349](astral-sh/uv#17349)) ##### Configuration - Allow setting proxy variables via global / user configuration ([#​16918](astral-sh/uv#16918)) - Manually parse and reconcile Boolean environment variables ([#​17321](astral-sh/uv#17321)) ##### Bug fixes - Avoid broken build artifacts on build failure ([#​17276](astral-sh/uv#17276)) - Fix missing dependencies on synthetic root in SBOM export ([#​17363](astral-sh/uv#17363)) - Recognize `armv8l` as an alias for `armv7l` in platform tag parsing ([#​17384](astral-sh/uv#17384)) - Fix redaction of a URL in a middleware trace log ([#​17346](astral-sh/uv#17346)) ##### Documentation - Add `index.md` suggestion to `llms.txt` ([#​17362](astral-sh/uv#17362)) - Clarify that `uv run` uses inexact syncing by default ([#​17366](astral-sh/uv#17366)) </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:eyJjcmVhdGVkSW5WZXIiOiI0Mi43NS4xIiwidXBkYXRlZEluVmVyIjoiNDIuNzUuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90IiwiYXV0b21hdGlvbjpib3QtYXV0aG9yZWQiLCJkZXBlbmRlbmN5LXR5cGU6OnBhdGNoIl19-->
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Closes #17390