Sourced from ty's releases.

0.0.26

Release Notes

Released on 2026-03-26.

Bug fixes

• Prevent "too many cycle iteration" panics in more situations (#24061)
• Fix false positives and false negatives when unpacking a union of tuples into a function call (#23298)

Core type checking

• Add support for typing.Concatenate (#23689)
• Validate the return type of generator functions (#24026)
• Support dataclass field converters (#23088)
• Disallow Self in metaclass and static methods (#23231)
• Improve call inference for keyword-only dict() (#24103)
• Respect non-explicitly defined dataclass_transform params (#24170)
• Unconditionally silence diagnostics in unreachable code (#24179)
• Respect terminal-function-call narrowing in global scope (#23245)

Performance

• Fix performance regression for narrowing on a larger Literal type(#24185)

Contributors

• @​sharkdp
• @​Glyphack
• @​charliermarsh
• @​mtshiba
• @​dhruvmanila
• @​carljm
• @​choucavalier

Install ty 0.0.26

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ty/releases/download/0.0.26/ty-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ty/releases/download/0.0.26/ty-installer.ps1 | iex"

Download ty 0.0.26

... (truncated)

Sourced from ty's changelog.

0.0.26

Released on 2026-03-26.

Bug fixes

• Prevent "too many cycle iteration" panics in more situations (#24061)
• Fix false positives and false negatives when unpacking a union of tuples into a function call (#23298)

Core type checking

• Add support for typing.Concatenate (#23689)
• Validate the return type of generator functions (#24026)
• Support dataclass field converters (#23088)
• Disallow Self in metaclass and static methods (#23231)
• Improve call inference for keyword-only dict() (#24103)
• Respect non-explicitly defined dataclass_transform params (#24170)
• Unconditionally silence diagnostics in unreachable code (#24179)
• Respect terminal-function-call narrowing in global scope (#23245)

Performance

• Fix performance regression for narrowing on a larger Literal type(#24185)

Contributors

• @​sharkdp
• @​Glyphack
• @​charliermarsh
• @​mtshiba
• @​dhruvmanila
• @​carljm
• @​choucavalier

• 9403051 Bump version to 0.0.26 (#3145)
• See full diff in compare view

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