astral-sh/ty 0.0.99

on GitHub

Release Notes

Released on 2026-11-06.

Bug fixes

• Handle output errors when generating shell completions (#29997)
• Invalidate aliased conditions across loop iterations (#30074)

LSP server

• Add support for workspace/willRenameFiles LSP request (#28330)

Other changes

• Bound comparisons of wide builtin literal unions (#30052)
• Fix call argument validation for variadic parameters (#30086)
• Freshen method typevars before owner specialization (#29543)
• Inform call specializations compatibility through type context (#29932)
• Keep source place IDs out of the use-def map (#30077)
• Preserve type structure during typevar freshening (#29803)
• Preserve typevars when mapping leaves their bounds unchanged (#29547)
• Preserve unions inferred during fixpoint iteration (#29927)
• Record lexical place IDs with their uses (#29956)
• Skip existing release artifacts when retrying mirror uploads (#4937)
• Skip fixpoint iteration for simple generic calls (#30054)
• Solve generic call type context through constraint sets (#26680)

Contributors

• @ibraheemdev
• @lerebear
• @ewdurbin
• @carljm
• @charliermarsh
• @dcreager

Install ty 0.0.99

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.99/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.99/ty-installer.ps1 | iex"

Download ty 0.0.99

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>