⬆️🐍 Update dependency ty to v0.0.40

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.39 → ==0.0.40

---

Release Notes

astral-sh/ty (ty)

v0.0.40

Compare Source

Released on 2026-05-27.

Bug fixes

• Accept complete enum-literal alias unions as enums (#​25341)
• Fix diagnostics in ignored folders after adding new files (#​25236)
• Show LiteralString when hovering over an inline of a literal string in an IDE (#​25373)

LSP server

• Follow aliases when attempting to map a definition in a stub file to its "real" runtime definition (#​25328)
• Treat Python notebook text documents as Python sources (#​25393)
• Fix autocompletion for elements inside incomplete list comprehensions (#​25326)

Diagnostics

• Add a subdiagnostic help message to invalid-generic-class diagnostics regarding incompatible variance (#​25385)

Core type checking

• Ignore and reject annotations on non-name targets (#​25324)
• Infer class attributes assigned by metaclass initialization (#​25342)
• Reject inconsistent generic bases in "dynamic" classes created using type(...), types.new_type(...), etc. (#​25413)
• Resolve enum names for all unions arms in Literal enum subsets (#​25379)
• Support typing.TypeForm (#​25334)
• Fix many issues in the generics solver by using constraint sets more widely to solve type variables (#​24540)

Contributors

• @​anuraaga
• @​dcreager
• @​charliermarsh
• @​MichaReiser
• @​Dev-X25874

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • "every weekend"
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!