[dependabot]

Bumps tox from 4.65.2 to 4.66.0.

Release notes

Sourced from tox's releases.

v4.66.0

Features - 4.66.0

• set_env environment files accept export KEY=value lines, setting KEY - by RavSinghChandan. (#4161)

Bug fixes - 4.66.0

• Remember a failed interpreter lookup for a virtualenv environment instead of repeating the full PATH scan for every setting that needs it, so tox config and tox run on configurations listing interpreters that are not installed are faster. (#4162)

PyPI release

Full Changelog: tox-dev/tox@4.65.6...4.66.0

v4.65.6

Bug fixes - 4.65.6

• Preserve literal single and double quotes in Windows command arguments. (#4159)
• Keep quotes in positional arguments on Windows, so tox -- "'x'" passes 'x' to the command as on Linux (#4160)

Contributor-facing changes - 4.65.6

• Split the TOML replace walker into one helper per value kind and directive, without changing behavior. (#4154)
• The INI and TOML loaders now share one active_factors() helper for the factors that hold for an environment instead of each keeping its own copy - by gaborbernat. (#4155)
• Move set_env string parsing out of the SetEnv constructor into small helpers, without changing behavior. (#4156)
• Split environment discovery in the environment selector into run and package helpers, without changing behavior. (#4157)
• The core and per-environment skip_missing_interpreters options now share one post-process for the --skip-missing-interpreters override instead of each keeping its own copy - by gaborbernat. (#4158)

PyPI release

Full Changelog: tox-dev/tox@4.65.5...4.65.6

v4.65.5

Bug fixes - 4.65.5

• Keep braces that are not a substitution in TOML configurations, as INI does, so {} in find -exec or a dict

... (truncated)

Changelog

Sourced from tox's changelog.

Features - 4.66.0

• set_env environment files accept export KEY=value lines, setting KEY - by :user:RavSinghChandan. (:issue:4161)

Bug fixes - 4.66.0

• Remember a failed interpreter lookup for a virtualenv environment instead of repeating the full PATH scan for every setting that needs it, so tox config and tox run on configurations listing interpreters that are not installed are faster. (:issue:4162)

---

v4.65.6 (2026-10-15)

---

Bug fixes - 4.65.6

• Preserve literal single and double quotes in Windows command arguments. (:issue:4159)
• Keep quotes in positional arguments on Windows, so tox -- "'x'" passes 'x' to the command as on Linux (:issue:4160)

Contributor-facing changes - 4.65.6

• Split the TOML replace walker into one helper per value kind and directive, without changing behavior. (:issue:4154)
• The INI and TOML loaders now share one active_factors() helper for the factors that hold for an environment instead of each keeping its own copy - by :user:gaborbernat. (:issue:4155)
• Move set_env string parsing out of the SetEnv constructor into small helpers, without changing behavior. (:issue:4156)
• Split environment discovery in the environment selector into run and package helpers, without changing behavior. (:issue:4157)
• The core and per-environment skip_missing_interpreters options now share one post-process for the --skip-missing-interpreters override instead of each keeping its own copy - by :user:gaborbernat. (:issue:4158)

---

v4.65.5 (2026-10-14)

---

Bug fixes - 4.65.5

• Keep braces that are not a substitution in TOML configurations, as INI does, so {} in find -exec or a dict literal in python -c reaches the command intact (:issue:4150)

---

... (truncated)

Commits

• 943a787 release 4.66.0
• 5c26849 ⚡ perf(virtualenv): cache failed interpreter discovery (#4162)
• c72d7cb ✨ feat(set_env): accept export in env files (#4161)
• 682bfa3 release 4.65.6
• 35abb7e 🐛 fix(config): keep quotes in Windows posargs (#4160)
• ea99608 fix(config): preserve literal quotes in Windows command arguments (#4159)
• 4ca1f36 ♻️ refactor(env_select): split environment discovery into helpers (#4157)
• b7d169a ♻️ refactor(set_env): move string parsing out of SetEnv.init (#4156)
• 2d0276a ♻️ refactor(toml): split the replace walker by value kind (#4154)
• 9026f39 ♻️ refactor(python): share the skip_missing_interpreters CLI post-process (#4...
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