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Implement type hierarchy

language-serverIssues specific to our IDE integration rather than type checkingIssues specific to our IDE integration rather than type checking

Status: Open.

Feature

#2264 In facebook/pyrefly;

· kinto0 opened on Jan 29, 2026

·  

V1 Release

Address variance conformance gaps: variance in base class specializations

Status: Open.

#2263 In facebook/pyrefly;

· migeed-z opened on Jan 29, 2026

·  

V1 Release

Incorrect unbound-name error

scoping-control-flowissues related to scoping and control flowissues related to scoping and control flow

typechecking

Status: Open.

#2261 In facebook/pyrefly;

· satya-waylit opened on Jan 29, 2026

<code>pyrefly report</code> ignores function declared in stub file

Status: Open.

#2259 In facebook/pyrefly;

· MarcoGorelli opened on Jan 29, 2026

NumPy CI reports a <code>deprecated</code> warning that cannot be locally reproduced

Status: Open.

#2258 In facebook/pyrefly;

· jorenham opened on Jan 29, 2026

Falsey doesn't flow for custom classes

Status: Open.

#2257 In facebook/pyrefly;

· samskiter opened on Jan 29, 2026

Pydantic generic containers accept class arguments, when they should only accept instance

needs-triage

pydanticIssues related to support for PydanticIssues related to support for Pydantic

typechecking

Status: Open.

#2255 In facebook/pyrefly;

· MartinBernstorff opened on Jan 29, 2026

Incoming Call Hierarchy is incomplete

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

needs-triage

Status: Open.

#2249 In facebook/pyrefly;

· Otto-AA opened on Jan 28, 2026

·  

V1 Release

using <code>+=</code> on types without <code>__iadd__</code> will evaluate <code>__getattr__</code> instead of <code>__add__</code>

overloads

Status: Open.

Bug

#2248 In facebook/pyrefly;

· jorenham opened on Jan 28, 2026

·  

V1 Release

CPU is pegged at 200% per window when using latest version of antigravity

performance

Status: Open.

Bug

#2245 In facebook/pyrefly;

· thesyntaxinator opened on Jan 28, 2026

·  

V1 Release

Support for <code>ty_extensions</code>

typechecking

Status: Open.

Feature

#2243 In facebook/pyrefly;

· jorenham opened on Jan 28, 2026

Pyrefly extension not supported for VSCode "browser" mode (vscode.dev)

language-serverIssues specific to our IDE integration rather than type checkingIssues specific to our IDE integration rather than type checking

Status: Open.

Feature

#2240 In facebook/pyrefly;

· javabster opened on Jan 27, 2026