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[ty] Update SpecializationBuilder hook to get both lower/upper bounds

ecosystem-analyzer

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Open (in progress).

astral-sh/ruffnumber 23848

#23848 In astral-sh/ruff;

· dcreager opened on Mar 10, 2026

[ty] Explicitly track the "support" of each constraint set

ecosystem-analyzer

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 23716

#23716 In astral-sh/ruff;

· dcreager opened on Mar 4, 2026

[ty] avoid costly computations in intersection type construction

ecosystem-analyzer

internalAn internal refactor or improvementAn internal refactor or improvement

performancePotential performance improvementPotential performance improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Open (in progress).

astral-sh/ruffnumber 23555

#23555 In astral-sh/ruff;

· mtshiba opened on Feb 25, 2026

[ty] calculate positive and negative narrowing constraints simultaneously

ecosystem-analyzer

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 23551

#23551 In astral-sh/ruff;

· mtshiba opened on Feb 25, 2026

[ty] Refactor index methods to parameterize scope

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Open (in progress).

astral-sh/ruffnumber 23394

#23394 In astral-sh/ruff;

· charliermarsh opened on Feb 18, 2026

Update NPM Development dependencies

internalAn internal refactor or improvementAn internal refactor or improvement

Status: Open (in progress).

astral-sh/ruffnumber 23325

#23325 In astral-sh/ruff;

· renovate opened on Feb 16, 2026

[ty] add TDD profiling infrastructure

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 23234

#23234 In astral-sh/ruff;

· mtshiba opened on Feb 11, 2026

ruff-ecosystem report unsafe fixes

ciRelated to internal CI toolingRelated to internal CI tooling

internalAn internal refactor or improvementAn internal refactor or improvement

Status: Open.

#22651 In astral-sh/ruff;

· leandrobbraga opened on Jan 17, 2026

[ty] Remove source_order fields from constraint sets; go back to fully reduced BDDs

ecosystem-analyzer

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 22578

#22578 In astral-sh/ruff;

· dcreager opened on Jan 14, 2026

[ty] Separate out upper and lower bound constraints

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 22400

#22400 In astral-sh/ruff;

· dcreager opened on Jan 5, 2026

Consider replacing bincode

internalAn internal refactor or improvementAn internal refactor or improvement

Status: Open.

#22284 In astral-sh/ruff;

· MichaReiser opened on Dec 29, 2025

[ty] Typevars should be considered equivalent even after lazy defaults/bounds/etc are forced

internalAn internal refactor or improvementAn internal refactor or improvement

tyMulti-file analysis & type inferenceMulti-file analysis & type inference

Status: Draft (not ready).

astral-sh/ruffnumber 21506

#21506 In astral-sh/ruff;

· dcreager opened on Nov 18, 2025