2026.6.0

Changes

• Add PyPI release workflow @mrocklin (#9297)
• Fix test failures caused by port 8787 already in use @crusaderky (#9296)
• Migrate from black to ruff format @crusaderky (#9295)
• SubprocessCluster: fix random crash on start @crusaderky (#9292)
• Refactor get_task_stream @crusaderky (#9293)
• fix: use task-stream index instead of wall clock in get_task_stream context manager (#9253) @MohammadYusif (#9282)
• Bump actions/checkout from 6.0.2 to 6.0.3 @dependabot[bot] (#9291)
• Bump codecov/codecov-action from 6 to 7 @dependabot[bot] (#9290)
• Do not build the distributed pixi package twice @crusaderky (#9289)
• Fix flaky test_steal_twice and test_steal_when_more_tasks @crusaderky (#9288)
• Clarify scheduler unpickling in protocol docs @peter941221 (#9286)
• Reinstate no-queue tests @crusaderky (#9287)
• Bump release-drafter/release-drafter from 6 to 7 @dependabot[bot] (#9208)
• Clarify unsatisfied resource restrictions in resource docs @peter941221 (#9269)
• Fix import-time coverage @crusaderky (#9284)
• Improve CLI error message for unknown options to dask worker (#9094) @ernestprovo23 (#9281)
• Run (most) CUDA tests in pixi @crusaderky (#9285)
• Migrate CI to pixi @crusaderky (#9276)
• Add AGENTS.md / CLAUDE.md; add guidelines re. AI pull requests @crusaderky (#9279)
• Fix tests vs. NumPy nightly builds @crusaderky (#9280)
• uvloop tests @crusaderky (#9278)
• Fix flaky test_call_stack_future @crusaderky (#9277)
• drop dependency on 'urllib3' @jameslamb (#9273)
• Remove avoid_ci mark @crusaderky (#9275)
• Print host_info in CI without needing NumPy @crusaderky (#9274)
• Fix typos @crusaderky (#9268)
• Support pixi in dask/dask CI @crusaderky (#9264)
• Truncate large coro repr in retry log output @ernestprovo23 (#9197)
• Add explicit check for name not None @maneesh29s (#9265)
• XFAIL test_scheduler_bokeh.py::test_simple in Windows @crusaderky (#9266)
• Clean up deprecated loop properties and parameters @crusaderky (#9231)
• Clean up deprecations in Scheduler, Worker, Nanny @crusaderky (#9238)
• Clean up deprecated client context in different tasks/threads @crusaderky (#9233)
• Clean up deprecated Prometheus metrics @crusaderky (#9249)
• Clean up deprecations in distributed.deploy @crusaderky (#9244)
• Clean up deprecated stream RPC handler argument @crusaderky (#9242)
• Clean up deprecations in CLI @crusaderky (#9240)
• Clean up deprecations in security @crusaderky (#9239)
• Clean up deprecated rpc synchronous context manager @crusaderky (#9235)
• Clean up deprecated async listener.stop() @crusaderky (#9234)
• Clean up deprecations in register_plugin @crusaderky (#9225)
• Clean up deprecations in SchedulerPlugin.remove_worker @crusaderky (#9222)
• Clean up minimum pyarrow version checks @crusaderky (#9260)
• Partial review of task streams @crusaderky (#9230)
• Update outdated work stealing docs regarding worker restrictions @kevinziroldi (#9214)
• Fix memray CI; move back from mamba to conda @crusaderky (#9258)
• Install keras with conda @crusaderky (#9259)
• Clean up Cython @crusaderky (#9257)
• Use @dataclass(slots=True) (with constraints from Python <3.14) @crusaderky (#9256)
• Type annotations for client.Future @crusaderky (#9255)
• Clean up deprecated Lock client parameter @crusaderky (#9237)
• Clean up deprecated nested_deserialize @crusaderky (#9243)
• Clean up deprecations in distributed.compatibility @crusaderky (#9232)
• Clean up deprecations in utils_test @crusaderky (#9226)
• Clean up deprecations in distributed.utils @crusaderky (#9236)
• Clean up deprecations in ProgressBar @crusaderky (#9250)
• Run more tests when requests is not installed @crusaderky (#9251)
• Standardize and increase async_poll_for timeout @crusaderky (#9248)
• Relax unreasonably short test timeouts @crusaderky (#9247)
• Use f-strings @DimitriPapadopoulos (#9245)
• Bump actions/checkout from 4.1.3 to 6.0.2 @DimitriPapadopoulos (#9246)
• [trivial] Update link to bokeh sources in comment @crusaderky (#9241)
• Apply ruff/pyupgrade rule UP031 @DimitriPapadopoulos (#9204)
• Homogeneous environment names @DimitriPapadopoulos (#9209)
• Bump codecov/codecov-action from 3 to 6 @dependabot[bot] (#9216)
• Overhaul publish_dataset extension @crusaderky (#9217)
• Fix flaky test_mixing_clients_same_scheduler @crusaderky (#9229)
• @contextmanager should return Generator[T] @crusaderky (#9228)
• Fix flaky test_actor.py::test_failed_worker @crusaderky (#9227)
• Clean up info parameters in transition to memory @crusaderky (#9221)
• Move state validation from Scheduler to SchedulerState @crusaderky (#9224)
• Bump to black 26.3.1 @crusaderky (#9223)
• Tweak scheduler annotations @crusaderky (#9220)
• Bump conda-incubator/setup-miniconda from 3.2.0 to 4.0.1 @dependabot[bot] (#9219)
• Fix typos @DimitriPapadopoulos (#9203)
• Bug: dashboard would not show no-worker tasks @crusaderky (#9215)

See the Changelog for more information.