Uv

Enhancements

- Add support for `--system-site-packages` in `uv venv` ([2101](https://github.com/astral-sh/uv/pull/2101))
- Add support for Python installed from Windows Store ([2122](https://github.com/astral-sh/uv/pull/2122))
- Expand environment variables in `-r` and `-c` subfile paths ([2143](https://github.com/astral-sh/uv/pull/2143))
- Treat empty index URL strings as null instead of erroring ([2137](https://github.com/astral-sh/uv/pull/2137))
- Use space as delimiter for `UV_EXTRA_INDEX_URL` ([2140](https://github.com/astral-sh/uv/pull/2140))
- Report line and column numbers in `requirements.txt` parser errors ([2100](https://github.com/astral-sh/uv/pull/2100))
- Improve error messages when `uv` is offline ([2110](https://github.com/astral-sh/uv/pull/2110))

Bug fixes

- Future-proof the `pip` entrypoints special-case ([1982](https://github.com/astral-sh/uv/pull/1982))
- Allow empty extras in `pep508-rs` and add more corner case to tests ([2128](https://github.com/astral-sh/uv/pull/2128))
- Adjust base Python lookup logic for Windows to respect Windows Store ([2121](https://github.com/astral-sh/uv/pull/2121))
- Consider editable dependencies to be 'direct' for `--resolution` ([2114](https://github.com/astral-sh/uv/pull/2114))
- Preserve environment variables in resolved Git dependencies ([2125](https://github.com/astral-sh/uv/pull/2125))
- Use `prefix` instead of `base_prefix` for environment root ([2117](https://github.com/astral-sh/uv/pull/2117))
- Wrap unsafe script shebangs in `/bin/sh` ([2097](https://github.com/astral-sh/uv/pull/2097))
- Make WHEEL parsing error line numbers one indexed ([2151](https://github.com/astral-sh/uv/pull/2151))
- Determine `site-packages` path based on implementation name ([2094](https://github.com/astral-sh/uv/pull/2094))

Documentation

- Add caveats on `--system` support to the README ([2131](https://github.com/astral-sh/uv/pull/2131))
- Add instructions for `SSL_CERT_FILE` env var ([2124](https://github.com/astral-sh/uv/pull/2124))

Bug fixes

- Prioritize `PATH` over `py --list-paths` in Windows selection ([2057](https://github.com/astral-sh/uv/pull/2057)). This fixes an issue in which the `--system` flag would not work correctly on Windows in GitHub Actions.
- Avoid canonicalizing user-provided interpreters ([2072](https://github.com/astral-sh/uv/pull/2072)). This fixes an issue in which the `--python` flag would not work correctly with pyenv and other interpreters.
- Allow pre-releases for requirements in constraints files ([2069](https://github.com/astral-sh/uv/pull/2069))
- Avoid truncating EXTERNALLY-MANAGED error message ([2073](https://github.com/astral-sh/uv/pull/2073))
- Extend activation highlighting to entire `venv` command ([2070](https://github.com/astral-sh/uv/pull/2070))
- Reverse the order of `--index-url` and `--extra-index-url` priority ([2083](https://github.com/astral-sh/uv/pull/2083))
- Avoid assuming `RECORD` file is in `platlib` ([2091](https://github.com/astral-sh/uv/pull/2091))

CLI

- Add a `--python` flag to allow installation into arbitrary Python interpreters ([2000](https://github.com/astral-sh/uv/pull/2000))
- Add a `--system` flag for opt-in non-virtualenv installs ([2046](https://github.com/astral-sh/uv/pull/2046))

Enhancements

- Add a `--pre` alias for `--prerelease=allow` ([2049](https://github.com/astral-sh/uv/pull/2049))
- Enable `freeze` and `list` to introspect non-virtualenv Pythons ([2033](https://github.com/astral-sh/uv/pull/2033))
- Support environment variables in index URLs in requirements files ([2036](https://github.com/astral-sh/uv/pull/2036))
- Add `--exclude-editable` and `--exclude` args to `uv pip list` ([1985](https://github.com/astral-sh/uv/pull/1985))
- Always remove color codes from output file ([2018](https://github.com/astral-sh/uv/pull/2018))
- Support recursive extras in direct `pyproject.toml` files ([1990](https://github.com/astral-sh/uv/pull/1990))
- Un-cache editable requirements with dynamic metadata ([2029](https://github.com/astral-sh/uv/pull/2029))
- Use a non-local lock file for locking system interpreters ([2045](https://github.com/astral-sh/uv/pull/2045))
- Surface the `EXTERNALLY-MANAGED` message to users ([2032](https://github.com/astral-sh/uv/pull/2032))

Enhancements

- Add support for pip-compile's `--unsafe-package` flag ([1889](https://github.com/astral-sh/uv/pull/1889))
- Improve interpreter discovery logging ([1909](https://github.com/astral-sh/uv/pull/1909))
- Implement `uv pip list` ([1662](https://github.com/astral-sh/uv/pull/1662))
- Allow round-trip via `freeze` command ([1936](https://github.com/astral-sh/uv/pull/1936))
- Don't write pip compile output to stdout with `-q` ([1962](https://github.com/astral-sh/uv/pull/1962))
- Add long-form version output ([1930](https://github.com/astral-sh/uv/pull/1930))

Compatibility

- Accept single string for `backend-path` ([1969](https://github.com/astral-sh/uv/pull/1969))
- Add compatibility for deprecated `python_implementation` marker ([1933](https://github.com/astral-sh/uv/pull/1933))
- Generate versioned `pip` launchers ([1918](https://github.com/astral-sh/uv/pull/1918))

Bug fixes

- Avoid erroring for source distributions with symlinks in archive ([1944](https://github.com/astral-sh/uv/pull/1944))
- Expand scope of archive timestamping ([1960](https://github.com/astral-sh/uv/pull/1960))
- Gracefully handle virtual environments with conflicting packages ([1893](https://github.com/astral-sh/uv/pull/1893))
- Invalidate dependencies when editables are updated ([1955](https://github.com/astral-sh/uv/pull/1955))
- Make < exclusive for non-prerelease markers ([1878](https://github.com/astral-sh/uv/pull/1878))
- Properly apply constraints in venv audit ([1956](https://github.com/astral-sh/uv/pull/1956))
- Re-sync editables on-change ([1959](https://github.com/astral-sh/uv/pull/1959))
- Remove current directory from PATH in PEP 517 hooks ([1975](https://github.com/astral-sh/uv/pull/1975))
- Remove `--upgrade` and `--quiet` flags from generated output files ([1873](https://github.com/astral-sh/uv/pull/1873))
- Use full python version in `pyvenv.cfg` ([1979](https://github.com/astral-sh/uv/pull/1979))

Performance
- fix `uv pip install` handling of gzip'd response and PEP 691 ([1978](https://github.com/astral-sh/uv/pull/1978))
- Remove `spawn_blocking` from version map ([1966](https://github.com/astral-sh/uv/pull/1966))

Documentation

- Clarify `lowest` vs. `lowest-direct` resolution strategies ([1954](https://github.com/astral-sh/uv/pull/1954))
- Improve error message for network timeouts ([1961](https://github.com/astral-sh/uv/pull/1961))

Enhancements

- Omit `--find-links` from annotation header unless requested ([1898](https://github.com/astral-sh/uv/pull/1898))
- Write to stdout when `--output-file` is present ([1892](https://github.com/astral-sh/uv/pull/1892))

Bug fixes

- Retain authentication when making range requests ([1902](https://github.com/astral-sh/uv/pull/1902))
- Fix uv-created venv detection ([1908](https://github.com/astral-sh/uv/pull/1908))
- Fix Windows `py` failure from spurious stderr ([1885](https://github.com/astral-sh/uv/pull/1885))
- Ignore Python 2 installations when querying for interpreters ([1905](https://github.com/astral-sh/uv/pull/1905))

Enhancements

- Add support for `config_settings` in PEP 517 hooks ([1833](https://github.com/astral-sh/uv/pull/1833))
- feat: allow passing extra config k,v pairs for pyvenv.cfg when creating a venv ([1852](https://github.com/astral-sh/uv/pull/1852))

Bug fixes

- Ensure authentication is passed from the index url to distribution files ([1886](https://github.com/astral-sh/uv/pull/1886))
- Use `rustls-tls-native-roots` in `uv` crate ([1888](https://github.com/astral-sh/uv/pull/1888))
- pep440: fix version ordering ([1883](https://github.com/astral-sh/uv/pull/1883))
- Hide index URLs from header if not emitted ([1835](https://github.com/astral-sh/uv/pull/1835))

Documentation

- Add changelog ([1881](https://github.com/astral-sh/uv/pull/1881))