⬆️🐍 Update dependency ty to v0.0.39

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.37 → ==0.0.39

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Release Notes

astral-sh/ty (ty)

v0.0.39

Compare Source

Released on 2026-05-22.

This release removes the Python 3.9 branches from our vendored standard library stubs. ty now only has "full" support for
Python 3.10 and later, but will still report version-specific syntax errors and other diagnostics when --python-version 3.9
is provided via the CLI.

Bug fixes

• Avoid panicking on __new__ assignments to classes (#​25282)
• Preserve declaration order when synthesizing class fields (#​25249)
• Respect dict-compatible fallbacks in TypedDict unions (#​25242)
• Retain recursively-defined state in binary expressions (#​25277)

LSP server

• Add Quick Fix to remove redundant cast (#​25211)
• Classify property declaration semantic tokens (#​25322)
• Escape HTML syntax in docstring rendering (#​25247)
• Prefer symbols from standard library over those of the same name from third party libraries for import completions. (#​25108)
• Support type aliases in document symbols (#​25302)

Diagnostics

• Add error context for extra callable parameters (#​25269)

Performance

• Avoid exponential blow-up in fall-through narrowing (#​25278)
• Speed up include filtering for projects with many literal include patterns (#​25266)

Core type checking

• Allow enum member accesses on self (#​25077)
• Emit a diagnostic for subclassing with order=True (#​21704)
• Full-scope bidirectional inference for unconstrained container literals (#​25279)
• Infer dict(TypedDict) as dict[str, object] (#​24852)
• Refine Callable class-decorator fallback for unknown results (#​25250)
• Reject incompatible explicit variance in generic base classes (#​25327)
• Support multi-inference through type aliases (#​25245)
• Sync vendored typeshed stubs (#​25271, #​25172)

Contributors

• @​ibraheemdev
• @​MatthewMckee4
• @​sqqueak
• @​lerebear
• @​sharkdp
• @​dhimasardinata
• @​MichaReiser
• @​charliermarsh

v0.0.38

Compare Source

Released on 2026-05-19.

Bug fixes

• Fix panic in enum literal during cycle recovery (#​25237)
• Fix panic from lazy NewType base expansion during cycle recovery (#​25234)
• Fix class-body global lookup before class binding (#​25224)
• Handle aliased dict fallbacks in TypedDict unions (#​25241)
• Ignore _generate_next_value_ with custom construction hooks (#​25210)

LSP server

• Fix find references for except handlers (#​25231)
• Preserve delimiters when folding expressions (#​24999)
• Use incremental file walk on .gitignore changes (#​25183)

Core type checking

• Add first-class support for enum complements (#​24961)
• Allow known non-field writes on frozen dataclass subclasses (#​25087)
• Ignore generic specialization in layout compatibility checks (#​25178)
• Preserve short-circuit bindings in all condition consumers (#​25160)
• Support class decorators (#​25091)
• Support custom _generate_next_value_ methods in enums (#​25196)

Contributors

• @​MatthewMckee4
• @​MichaReiser
• @​charliermarsh
• @​lerebear
• @​thejchap

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[codecov]

Codecov Report

❌ Patch coverage is 92.10526% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/mqt/qecc/cococo/utils_routing.py	87.9%	7 Missing ⚠️
src/mqt/qecc/cococo/snake_builder.py	96.4%	2 Missing ⚠️

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