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Pyrefly v0.26.0

Status: ALPHA

Release date: 2025-07-28

Pyrefly 0.26.0 bundles 179 commits from 24 contributors

📝 Changelog

Configuration

• Added a "disable-search-path-heuristics" to disable search path heuristics for users that want to configure all imports manually.
• Fixed issues with the --watch flag.
• Support .pyx, .pyd, and .pyw compiled files for module finding and globbing.
• Disabled imports from pycache to prevent incorrect imports.

Typechecking Features

• Fix several bugs with variable scopes.
• Warn on calling deprecated overloads.
• Added support for checking code snippets directly from the command line.
• Disallowed attribute assignment or deletion on super() objects.
• Emit an error when an uncalled function is used as the condition for an if statement.
• Improved new and init_subclass behavior.
• Enabled support for descriptors in dataclass fields.
• Fixed bugs related to TypedDict operations, including setitem and matching against PartialTypedDict.
• Fix bug with synthesized namedtuple constructors.

IDE

• Optimized autocomplete by filtering local variable results and providing a specialized path for builtins, effectively improving auto-import behavior.

Other

• Enhanced performance with caching for node packages and rust-cache.
• Improved display of default values and type information.
• Improved subscript error messages to indicate non-subscriptable types.
• Summary display is now more concise by default, with options for detailed or no summary.

📦 Upgrade

pip install --upgrade pyrefly==0.26.0

🖊️ Contributors this release

@​grievejia @​samwgoldman @​stroxler @​rchen152 @​fangyi-zhou @​ndmitchell @​rubmary @​kinto0 @​arthaud @​lolpack @​migeed-z @​darricklaidin @​connernilsen @​regexyl @​danielocfb @​WeixiMa @​MaggieMoss @​yangdanny97

Full Changelog: https://github.com/facebook/pyrefly/compare/0.25.0..0.26.0

Pyrefly v0.25.0

Status: ALPHA

... (truncated)

• 4645d76 Version bump
• 0389dcc Drop Pyre1's typeshed when type checking with Buck+Pyrefly
• 0c7797e On closing file, free the memory
• bd9ac0e Delete redundant ignore
• d6b736c Add another incremental test case
• d1af10d Rewrite invalidate_rdeps
• b41ba6d Make it an error to call commit without run
• 304294f Add an explicit test of the rdeps case
• 079c8d1 Don't even call set_memory if there are subsequent mutations
• 9da753d Replace recursive calls to is_subset_eq_impl() inside is_subset_eq_impl with ...
• Additional commits viewable in compare view

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