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@github-actions github-actions released this 13 Aug 00:40
Immutable release. Only release title and notes can be modified.
0.0.71
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Release Notes

Released on 2026-08-12.

Library support

  • Respect third-party keyword-only fields before Python 3.10 (#27699)

Diagnostics

  • Diagnose invalid __getattribute__ calls (#27506)
  • Validate boolean conversion in comprehension filters (#27641)
  • Validate unpacked callable argument shapes (#27516)

Core type checking

  • Avoid introducing boolean literals when narrowing integers (#27698)
  • Fix truthiness inference for subclassable known classes (#27638)
  • Handle class objects that may be descriptors (#26687)
  • Infer type variables through nominal type[...] parameters (#27689)
  • Model exception flow with operation checkpoints (#27471)
  • Preserve constrained TypeVar types when slicing (#27645)
  • Preserve enum attributes on Self and bounded type variables (#27644)
  • Preserve enum exhaustiveness with custom _missing_ methods (#27700)
  • Preserve literal-string origin in comparison narrowing (#27582)
  • Resolve generic type aliases subscripted inside type[] (#27663)
  • Restrict equality impossibility to static bounds (#27655)

Performance

  • Avoid deriving sequents for type variables with concrete bounds (#27587)

Contributors

Install ty 0.0.71

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.71/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.71/ty-installer.ps1 | iex"

Download ty 0.0.71

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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