Merge branch 'main' into charlie/metaclass

* main: (40 commits)
  [ty] resolve union-likes in emitting union attribute errors (#24263)
  [ty] Improve support for `Callable` type context (#23888)
  [ty] Propagate type context through `await` expressions (#24256)
  [`pyflakes`] Flag annotated variable redeclarations as `F811` in preview mode (#24244)
  [ty] Preserve `Divergent` when materializing recursive aliases (#24245)
  Fix W391 fixes for consecutive empty notebook cells (#24236)
  [flake8-bugbear] Clarify RUF071 fix safety for non-path string comparisons (#24149)
  [ty] Ban type qualifiers in PEP-695 type aliases (#24242)
  [ty] Include keyword-prefixed symbols in completions for attributes (#24232)
  [ty] Add tests for TypedDict method overloads on unions (#24230)
  [ty] report unused bindings as unnecessary hint diagnostics (#23305)
  Remove unused `non_root` variable (#24238)
  Extend F507 to flag %-format strings with zero placeholders (#24215)
  [`flake8-simplify`] Suppress `SIM105` for `except*` before Python 3.12 (#23869)
  Ignore pre-initialization references in SIM113 (#24235)
  Parenthesize expression in RUF050 fix (#24234)
  Publish playgrounds using the `release-playground` environment (#24223)
  [ty] Fix instance-attribute lookup in methods of protocol classes (#24213)
  [ty] Used shared expression cache during generic call inference (#24219)
  [ty] make `Type::BoundMethod` include instances of same-named methods bound to a subclass (#24039)
  ...

Author: carljm

.github/PULL_REQUEST_TEMPLATE.md

@@ -5,6 +5,7 @@ Thank you for contributing to Ruff/ty! To help us out with reviewing, please con
 - Does this pull request include a descriptive title? (Please prefix with `[ty]` for ty pull
   requests.)
 - Does this pull request include references to any relevant issues?
+- Does this PR follow our AI policy (https://github.com/astral-sh/.github/blob/main/AI_POLICY.md)?
 -->
 
 ## Summary

.github/workflows/publish-docs.yml

@@ -22,6 +22,8 @@ permissions:
 
 jobs:
   mkdocs:
+    environment:
+      name: release
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

.github/workflows/publish-playground.yml

@@ -23,6 +23,7 @@ permissions: {}
 jobs:
   publish:
     runs-on: ubuntu-latest
+    environment: release-playground
     env:
       CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
     steps:

.github/workflows/publish-ty-playground.yml

@@ -27,6 +27,7 @@ env:
 jobs:
   publish:
     runs-on: ubuntu-latest
+    environment: release-playground
     env:
       CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
     steps:

.github/workflows/publish-versions.yml

@@ -16,6 +16,7 @@ permissions: {}
 jobs:
   publish-versions:
     runs-on: ubuntu-latest
+    environment: release
     env:
       VERSION: ${{ fromJson(inputs.plan).announcement_tag }}
     steps:

.github/workflows/publish-wasm.yml

@@ -14,6 +14,7 @@ on:
 jobs:
   publish:
     runs-on: ubuntu-latest
+    environment: release
     permissions:
       contents: read
       id-token: write

CHANGELOG.md

@@ -1,5 +1,67 @@
 # Changelog
 
+## 0.15.8
+
+Released on 2026-03-26.
+
+### Preview features
+
+- \[`ruff`\] New rule `unnecessary-if` (`RUF050`) ([#24114](https://github.com/astral-sh/ruff/pull/24114))
+- \[`ruff`\] New rule `useless-finally` (`RUF072`) ([#24165](https://github.com/astral-sh/ruff/pull/24165))
+- \[`ruff`\] New rule `f-string-percent-format` (`RUF073`): warn when using `%` operator on an f-string ([#24162](https://github.com/astral-sh/ruff/pull/24162))
+- \[`pyflakes`\] Recognize `frozendict` as a builtin for Python 3.15+ ([#24100](https://github.com/astral-sh/ruff/pull/24100))
+
+### Bug fixes
+
+- \[`flake8-async`\] Use fully-qualified `anyio.lowlevel` import in autofix (`ASYNC115`) ([#24166](https://github.com/astral-sh/ruff/pull/24166))
+- \[`flake8-bandit`\] Check tuple arguments for partial paths in `S607` ([#24080](https://github.com/astral-sh/ruff/pull/24080))
+- \[`pyflakes`\] Skip `undefined-name` (`F821`) for conditionally deleted variables ([#24088](https://github.com/astral-sh/ruff/pull/24088))
+- `E501`/`W505`/formatter: Exclude nested pragma comments from line width calculation ([#24071](https://github.com/astral-sh/ruff/pull/24071))
+- Fix `%foo?` parsing in IPython assignment expressions ([#24152](https://github.com/astral-sh/ruff/pull/24152))
+- `analyze graph`: resolve string imports that reference attributes, not just modules ([#24058](https://github.com/astral-sh/ruff/pull/24058))
+
+### Rule changes
+
+- \[`eradicate`\] ignore `ty: ignore` comments in `ERA001` ([#24192](https://github.com/astral-sh/ruff/pull/24192))
+- \[`flake8-bandit`\] Treat `sys.executable` as trusted input in `S603` ([#24106](https://github.com/astral-sh/ruff/pull/24106))
+- \[`flake8-self`\] Recognize `Self` annotation and `self` assignment in `SLF001` ([#24144](https://github.com/astral-sh/ruff/pull/24144))
+- \[`pyflakes`\] `F507`: Fix false negative for non-tuple RHS in `%`-formatting ([#24142](https://github.com/astral-sh/ruff/pull/24142))
+- \[`refurb`\] Parenthesize generator arguments in `FURB142` fixer ([#24200](https://github.com/astral-sh/ruff/pull/24200))
+
+### Performance
+
+- Speed up diagnostic rendering ([#24146](https://github.com/astral-sh/ruff/pull/24146))
+
+### Server
+
+- Warn when Markdown files are skipped due to preview being disabled ([#24150](https://github.com/astral-sh/ruff/pull/24150))
+
+### Documentation
+
+- Clarify `extend-ignore` and `extend-select` settings documentation ([#24064](https://github.com/astral-sh/ruff/pull/24064))
+- Mention AI policy in PR template ([#24198](https://github.com/astral-sh/ruff/pull/24198))
+
+### Other changes
+
+- Use trusted publishing for NPM packages ([#24171](https://github.com/astral-sh/ruff/pull/24171))
+
+### Contributors
+
+- [@bitloi](https://github.com/bitloi)
+- [@Sim-hu](https://github.com/Sim-hu)
+- [@mvanhorn](https://github.com/mvanhorn)
+- [@chinar-amrutkar](https://github.com/chinar-amrutkar)
+- [@markjm](https://github.com/markjm)
+- [@RenzoMXD](https://github.com/RenzoMXD)
+- [@vivekkhimani](https://github.com/vivekkhimani)
+- [@seroperson](https://github.com/seroperson)
+- [@moktamd](https://github.com/moktamd)
+- [@charliermarsh](https://github.com/charliermarsh)
+- [@ntBre](https://github.com/ntBre)
+- [@zanieb](https://github.com/zanieb)
+- [@dylwil3](https://github.com/dylwil3)
+- [@MichaReiser](https://github.com/MichaReiser)
+
 ## 0.15.7
 
 Released on 2026-03-19.

Cargo.lock

@@ -152,8 +152,8 @@ curl -LsSf https://astral.sh/ruff/install.sh | sh
 powershell -c "irm https://astral.sh/ruff/install.ps1 | iex"
 
 # For a specific version.
-curl -LsSf https://astral.sh/ruff/0.15.7/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.15.7/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.15.8/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.15.8/install.ps1 | iex"
 ```
 
 You can also install Ruff via [Homebrew](https://formulae.brew.sh/formula/ruff), [Conda](https://anaconda.org/conda-forge/ruff),
@@ -186,7 +186,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com/) hook via [`ruff
 ```yaml
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
-  rev: v0.15.7
+  rev: v0.15.8
   hooks:
     # Run the linter.
     - id: ruff-check

README.md

@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.15.7"
+version = "0.15.8"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }