Release 0.15.8 (#24217)

- **changelog**
- **everything else**

Author: amyreese

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 }

crates/ruff/Cargo.toml

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

crates/ruff_linter/Cargo.toml

@@ -27,7 +27,7 @@ use crate::checkers::ast::Checker;
 /// f"hello {first} {second}"
 /// ```
 #[derive(ViolationMetadata)]
-#[violation_metadata(preview_since = "NEXT_RUFF_VERSION")]
+#[violation_metadata(preview_since = "0.15.8")]
 pub(crate) struct FStringPercentFormat;
 
 impl Violation for FStringPercentFormat {

crates/ruff_linter/src/rules/ruff/rules/fstring_percent_format.rs

@@ -59,7 +59,7 @@ use crate::{AlwaysFixableViolation, Edit, Fix, fix};
 /// - [`empty-type-checking-block (TC005)`]: Detects empty `if TYPE_CHECKING`
 ///   blocks specifically.
 #[derive(ViolationMetadata)]
-#[violation_metadata(preview_since = "NEXT_RUFF_VERSION")]
+#[violation_metadata(preview_since = "0.15.8")]
 pub(crate) struct UnnecessaryIf;
 
 impl AlwaysFixableViolation for UnnecessaryIf {

crates/ruff_linter/src/rules/ruff/rules/unnecessary_if.rs

@@ -59,7 +59,7 @@ use crate::{Edit, Fix, FixAvailability, Violation};
 ///   so RUF072 must remove it first
 /// - [`useless-try-except`][TRY203]: Flags `try/except` that only re-raises
 #[derive(ViolationMetadata)]
-#[violation_metadata(preview_since = "NEXT_RUFF_VERSION")]
+#[violation_metadata(preview_since = "0.15.8")]
 pub(crate) struct UselessFinally;
 
 impl Violation for UselessFinally {

crates/ruff_linter/src/rules/ruff/rules/useless_finally.rs

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

crates/ruff_wasm/Cargo.toml

@@ -306,7 +306,7 @@ support needs to be explicitly included by adding it to `types_or`:
 ```yaml title=".pre-commit-config.yaml"
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.7
+    rev: v0.15.8
     hooks:
       - id: ruff-format
         types_or: [python, pyi, jupyter, markdown]