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@github-actions github-actions released this 19 Aug 03:13
Immutable release. Only release title and notes can be modified.
0.0.73
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Learn about vigilant mode.

Release Notes

Released on 2026-08-18.

LSP server

  • Do not prefer unsafe fixes in the language server (#27822)
  • Fix signature help in trailing whitespace (#27784)

Library support

  • Preserve variadic generics in functools.partial (#27774)

Diagnostics

  • Add an opt-in rule flagging function decorators that transform a non-dynamic type into a dynamic type (#27829)
  • Disambiguate same-named types in several diagnostics (#27814)
  • Show error spans for errors originating in script metadata (#26693)

Core type checking

  • Avoid bypassing solver during literal promotion (#27763)
  • Expand nested union aliases when finding a TypedDict or callable (#27740)
  • Implement intersection meta-type projection (#27660)
  • Infer generic protocols from class objects (#27812)
  • Model exception-suppressing context managers (#27219)
  • Preserve TypeAliasType runtime origin (#27813)
  • Preserve class objects in lazy protocol checks (#27815)
  • Preserve declared types in exception handlers (#27817)
  • Preserve explicit globals after conditional rebinding (#27786)
  • Preserve property subclass types and accessors (#27833)
  • Preserve required stub fields in generated constructors (#27765)
  • Preserve static upper bounds of gradual solutions (#27664)
  • Prevent unrelated quantified constraints from destabilizing recursive queries (#27737)
  • Separate generic constraint accumulation from legacy projection (#27743)
  • Simplify generic protocol inference (#27819)
  • Specialize inherited members of unspecialized generic classes (#27658)
  • Specialize type variables determined by bound receivers (#27732)
  • Support unpacking tuple type aliases (#27825)
  • Sync vendored typeshed stubs (#27771). Typeshed diff

Performance

  • Cache py.typed contents (#27805)
  • Deduplicate exception checkpoints across equivalent branches (#27703)

Contributors

Install ty 0.0.73

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.73/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.73/ty-installer.ps1 | iex"

Download ty 0.0.73

File Platform Checksum
ty-aarch64-apple-darwin.tar.gz Apple Silicon macOS checksum
ty-x86_64-apple-darwin.tar.gz Intel macOS checksum
ty-aarch64-pc-windows-msvc.zip ARM64 Windows checksum
ty-i686-pc-windows-msvc.zip x86 Windows checksum
ty-x86_64-pc-windows-msvc.zip x64 Windows checksum
ty-aarch64-unknown-linux-gnu.tar.gz ARM64 Linux checksum
ty-i686-unknown-linux-gnu.tar.gz x86 Linux checksum
ty-powerpc64-unknown-linux-gnu.tar.gz PPC64 Linux checksum
ty-powerpc64le-unknown-linux-gnu.tar.gz PPC64LE Linux checksum
ty-riscv64gc-unknown-linux-gnu.tar.gz RISCV Linux checksum
ty-s390x-unknown-linux-gnu.tar.gz S390x Linux checksum
ty-x86_64-unknown-linux-gnu.tar.gz x64 Linux checksum
ty-armv7-unknown-linux-gnueabihf.tar.gz ARMv7 Linux checksum
ty-aarch64-unknown-linux-musl.tar.gz ARM64 MUSL Linux checksum
ty-i686-unknown-linux-musl.tar.gz x86 MUSL Linux checksum
ty-x86_64-unknown-linux-musl.tar.gz x64 MUSL Linux checksum
ty-arm-unknown-linux-musleabihf.tar.gz ARMv6 MUSL Linux (Hardfloat) checksum
ty-armv7-unknown-linux-musleabihf.tar.gz ARMv7 MUSL Linux checksum

Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the GitHub CLI:

gh attestation verify <file-path of downloaded artifact> --repo astral-sh/ty

You can also download the attestation from GitHub and verify against that directly:

gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>
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