Changelog for python3-pdm: 2.28.0 -> 2.28.1
Source: CHANGELOG.md

## Release v2.28.1 (2026-08-11)

### Features & Improvements

- Defer command action and Python installer imports until their corresponding runtime paths execute. ([#3673](https://github.com/pdm-project/pdm/issues/3673))
- Add `{run_cwd}` placeholder for scripts to reference the original working directory. ([#3734](https://github.com/pdm-project/pdm/issues/3734))
- Add opt-in canonical lock input freshness via `tool.pdm.resolution.lock_inputs` while retaining sticky lockfile behavior and legacy hash fallback for existing lock files. ([#3821](https://github.com/pdm-project/pdm/issues/3821))
- Integrate `argcomplete` for simplified command-line completion scripts. ([#3823](https://github.com/pdm-project/pdm/issues/3823))

### Bug Fixes

- Keep workspace members in their explicitly declared dependency groups instead of adding them to ``default`` in the lockfile. ([#3816](https://github.com/pdm-project/pdm/issues/3816))
- Keep the cached parsed version intact when stripping the local segment in `comparable_version()`. ([#3817](https://github.com/pdm-project/pdm/issues/3817))
- Make `use_uv` support adding local files. ([#3822](https://github.com/pdm-project/pdm/issues/3822))
- Add a Poetry optional dependency to every extra that lists it when importing, instead of only the first one. ([#3831](https://github.com/pdm-project/pdm/issues/3831))
- Do not write null values into the generated `pyproject.toml` when importing a flit project that omits `author-email`/`maintainer-email` or sets only one of `include` and `exclude` in `[tool.flit.sdist]`. ([#3832](https://github.com/pdm-project/pdm/issues/3832))

### Miscellany

- Add Python 3.15 preview version to the CI matrix. ([#3827](https://github.com/pdm-project/pdm/issues/3827))