Sourced from tox's releases.

4.30.2

What's Changed

• Bump pypa/gh-action-pypi-publish from 1.12.4 to 1.13.0 by @​dependabot[bot] in tox-dev/tox#3603
• Ensure automatically provisioned environment is torn down by @​vytas7 in tox-dev/tox#3601
• Bump pypa/gh-action-pypi-publish from 1.12.4 to 1.13.0 in /.github/workflows by @​dependabot[bot] in tox-dev/tox#3604

Full Changelog: https://github.com/tox-dev/tox/compare/4.30.1...4.30.2

4.30.1

What's Changed

• Prevent Tox from hanging with --installpkg sdist due to orphaned build backend by @​vytas7 in tox-dev/tox#3530

New Contributors

• @​vytas7 made their first contribution in tox-dev/tox#3530

Full Changelog: https://github.com/tox-dev/tox/compare/4.30.0...4.30.1

4.30.0

What's Changed

• Pass through CI as __TOX_ENVIRONMENT_VARIABLE_ORIGINAL_CI by @​Liam-DeVoe in tox-dev/tox#3592
• [pre-commit.ci] pre-commit autoupdate by @​pre-commit-ci[bot] in tox-dev/tox#3596
• Fix the built docs HTML path hint in tox.toml by @​webknjaz in tox-dev/tox#3594
• Add a "version added" note for tox_extend_envs by @​webknjaz in tox-dev/tox#3595
• fix: provide clear messaging about config file loading by @​ssbarnea in tox-dev/tox#3578
• Ensure tox_extend_envs list can be read twice by @​webknjaz in tox-dev/tox#3598

New Contributors

• @​Liam-DeVoe made their first contribution in tox-dev/tox#3592

Full Changelog: https://github.com/tox-dev/tox/compare/4.29.0...4.30.0

4.29.0

What's Changed

• Docs: environment variables contain strings by @​hroncok in tox-dev/tox#3575
• 🐍 Fix sys_platform Fixture Leakage breaking the CI by @​gaborbernat in tox-dev/tox#3589
• Expose a new tox_extend_envs hook in plugins API by @​webknjaz in tox-dev/tox#3591

Full Changelog: https://github.com/tox-dev/tox/compare/4.28.4...4.29.0

Sourced from tox's changelog.

v4.30.2 (2025-09-04)

Bugfixes - 4.30.2

- Previously, when tox ran in an automatically provisioned environment, it could hang waiting for a PEP 517 build backend
  if used in conjunction with the ``--installpkg`` option. This has been fixed by properly tearing down the automatically
  provisioned environment after the tests.
  - by :user:`vytas7` (:issue:`3600`)
v4.30.1 (2025-09-03)
Bugfixes - 4.30.1

• Prevent tox from hanging upon exit due to orphaned build threads and subprocesses when the --installpkg option is used with sdist.
  • by :user:vytas7 (:issue:3530)

v4.30.0 (2025-09-03)

Features - 4.30.0

- Add ``__TOX_ENVIRONMENT_VARIABLE_ORIGINAL_CI``, which passes through the ``CI`` variable if present. This is intended for use by other libraries to detect if tox is running under CI. (:issue:`3442`)
Bugfixes - 4.30.0

• Makes the error message more clear when pyproject.toml file cannot be loaded or is missing expected keys. (:issue:3578)

• The :func:tox_extend_envs() hook <tox.plugin.spec.tox_extend_envs> recently added in :pull:3591 turned out to not work well with tox run. It was fixed internally, not to exhaust the underlying iterator on the first use.

  -- by :user:webknjaz (:issue:3598)

v4.29.0 (2025-08-29)

Features - 4.29.0

- A new tox life cycle event is now exposed for use via :doc:`Plugins
  API </plugins>` -- by :user:`webknjaz`.
The corresponding hook point is :func:tox_extend_envs &lt;tox.plugin.spec.tox_extend_envs&gt;. It allows plugin authors to
declare ephemeral environments that they can then populate through
the in-memory configuration loader interface.
</tr></table>

... (truncated)

• 5e0784a release 4.30.2
• 64e8a34 Bump pypa/gh-action-pypi-publish in /.github/workflows (#3604)
• 7230088 Ensure automatically provisioned environment is torn down (#3601)
• 2c31dbc Bump pypa/gh-action-pypi-publish from 1.12.4 to 1.13.0 (#3603)
• b33a43c release 4.30.1
• 9ea1c32 Prevent Tox from hanging with --installpkg sdist due to orphaned build back...
• aa90652 release 4.30.0
• 48fecab Ensure tox_extend_envs list can be read twice (#3598)
• 0b8f66f fix: provide clear messaging about config file loading (#3578)
• adf0997 Add a "version added" note for tox_extend_envs (#3595)
• Additional commits viewable in compare view

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