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Cargo: Enable most pedantic Clippy lints - #23095

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@paldepind paldepind commented Nov 11, 2026 •

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This PR enables most lints in Clippy's pedantic group, similar to what we used to have for the C/C++ BMN setup. Compared to that I've disable a few more rules, since they provided false positives or results of dubious value.

All the lint errors have been fixed using Clippy's automatic --fix option or by Copilot. I've vetted each rule that required changes and gone through all the changes. Combined with #23053 we've now fixed 207 lint errors! Of course many of these are very tiny improvements, but almost all of them makes the code more consistent, idiomatic, performant, clear/explicit, robust, etc. So I think this is overall a really nice improvement.

I did a commit for each lint rule that was addressed. This makes it easy to see why something was changed, but make per-commit review rather tedious. The changes here are rather simple and of a if-it-still-compiles-it-still-works kind. So I think a very light review of the changes is sufficient. I've started DCA for Rust, Ruby and Unified.

paldepind and others added 11 commits November 11, 2026 11:48
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8

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🟡 Changes recommended

Active critical build and compilation failures remain, including unresolved Bazel dependencies and an invalid String collection, along with a breaking public API change.

5 open issues
What changed in this PR

This PR enables most Clippy pedantic lints across the Rust workspace, applies the resulting idiomatic refactors, and replaces direct lazy_static usage with std::sync::LazyLock.

Changes:

  • Enables workspace-wide Clippy pedantic lints with targeted exceptions.
  • Applies refactors across extractors, Yeast, generators, tests, and supporting utilities.
  • Updates Cargo and Bazel dependency metadata.
File Description
unified/​swift-syntax-rs/​src/​main.rs Simplifies source input selection.
unified/​swift-syntax-rs/​src/​lib.rs Updates test string handling and lint allowances.
unified/​extractor/​tests/​corpus_tests.rs Simplifies environment parsing and assertions.
unified/​extractor/​src/​languages/​swift/​swift.rs Adds a lint allowance and simplifies iteration.
unified/​extractor/​Cargo.toml Removes the direct lazy_static dependency.
shared/​yeast/​tests/​test.rs Simplifies helper APIs and raw string literals.
shared/​yeast/​src/​range.rs Adds must_use annotations.
shared/​yeast/​src/​query.rs Simplifies pattern matching and copying.
shared/​yeast/​src/​lib.rs Applies API, formatting, and ownership refactors.
shared/​yeast/​src/​dump.rs Updates documentation and lint allowances.
shared/​yeast/​src/​captures.rs Simplifies option handling.
shared/​yeast/​src/​bin/​node_types_yaml.rs Simplifies input selection.
shared/​yeast-schema/​src/​node_types_yaml.rs Refactors field conversion and test literals.
shared/​yeast-macros/​src/​template_parse.rs Avoids unnecessary group moves.
shared/​yeast-macros/​src/​lower.rs Passes token streams by reference and adds a lint allowance.
shared/​yeast-macros/​src/​ast.rs Simplifies a test raw string literal.
shared/​tree-sitter-extractor/​tests/​multiple_languages.rs Updates renamed test fixture fields.
shared/​tree-sitter-extractor/​tests/​integration_test.rs Updates renamed test fixture fields.
shared/​tree-sitter-extractor/​tests/​common/​mod.rs Renames the source archive fixture field.
shared/​tree-sitter-extractor/​src/​trap.rs Simplifies formatting and writes output incrementally.
shared/​tree-sitter-extractor/​src/​options.rs Simplifies error formatting.
shared/​tree-sitter-extractor/​src/​node_types.rs Refactors ownership and string construction.
shared/​tree-sitter-extractor/​src/​generator/​ql.rs Simplifies generated output formatting.
shared/​tree-sitter-extractor/​src/​generator/​ql_gen.rs Simplifies matching and adds lint allowances.
shared/​tree-sitter-extractor/​src/​generator/​mod.rs Simplifies generated name construction and borrowing.
shared/​tree-sitter-extractor/​src/​file_paths.rs Simplifies path handling and formatting.
shared/​tree-sitter-extractor/​src/​extractor/​mod.rs Simplifies verbosity handling and control flow.
shared/​tree-sitter-extractor/​src/​extractor/​driver.rs Adds a lint allowance and improves path formatting.
shared/​tree-sitter-extractor/​src/​diagnostics.rs Simplifies string cloning and defaults.
shared/​tree-sitter-extractor/​Cargo.toml Removes the direct lazy_static dependency.
rust/​extractor/​src/​util.rs Changes option comparison inputs to borrowed values.
rust/​extractor/​src/​translate/​base.rs Makes statement-style control flow explicit.
rust/​extractor/​src/​rust_analyzer.rs Moves local constants near their uses.
rust/​extractor/​src/​main.rs Simplifies option handling and adds a lint allowance.
rust/​extractor/​src/​diagnostics.rs Simplifies default string construction.
rust/​extractor/​src/​crate_graph.rs Simplifies iterator filtering and comparison.
rust/​extractor/​src/​configuration.rs Adapts callers to the updated option comparator.
rust/​extractor/​src/​config/​deserialize.rs Avoids an unnecessary string clone.
rust/​extractor/​src/​config.rs Simplifies the separator literal.
rust/​ast-generator/​src/​main.rs Simplifies grouped matches and borrowing.
rust/​ast-generator/​patches/​rust-analyzer.patch Applies equivalent Clippy-driven changes to the patched generator.
ruby/​extractor/​src/​main.rs Passes extractor options by reference.
ruby/​extractor/​src/​extractor.rs Replaces lazy_static with LazyLock and simplifies ownership.
ruby/​extractor/​Cargo.toml Removes the direct lazy_static dependency.
ql/​buramu/​src/​main.rs Replaces lazy_static with LazyLock.
ql/​buramu/​Cargo.toml Removes the direct lazy_static dependency.
MODULE.bazel Updates exported Rust workspace dependencies.
misc/​bazel/​3rdparty/​rust_workspace_deps/​lazy_static/​BUILD.bazel Removes the obsolete dependency alias.
misc/​bazel/​3rdparty/​rust_workspace_deps/​lazy_static-1.5.1/​BUILD.bazel Removes the obsolete versioned alias.
misc/​bazel/​3rdparty/​rust_workspace_deps/​crates.bzl Updates generated dependency mappings.
misc/​bazel/​3rdparty/​rust_workspace_deps/​BUILD.bazel Removes obsolete lazy_static aliases.
cpp/​extractor/​bmn/​src/​package_database.rs Improves path error formatting.
cpp/​extractor/​bmn/​src/​main.rs Improves executable path error formatting.
cpp/​extractor/​bmn/​src/​gnu_compiler_default_include_finder.rs Updates compiler error formatting and tests.
cpp/​extractor/​bmn/​src/​file_filter.rs Improves path error formatting.
cpp/​extractor/​bmn/​src/​dependency_installation.rs Improves command failure formatting.
cpp/​extractor/​bmn/​src/​compiler.rs Improves compiler error formatting.
clippy.toml Adds documentation identifier configuration.
Cargo.toml Enables workspace-wide pedantic Clippy lints and exceptions.
Cargo.lock Removes direct lazy_static dependency entries from workspace packages.

Review effort: Lite (auto)

Comment thread MODULE.bazel Resolved
Comment thread shared/yeast/src/lib.rs Resolved
Comment thread clippy.toml Resolved
paldepind and others added 11 commits November 11, 2026 12:28
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
paldepind and others added 17 commits November 11, 2026 12:28
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e4429304-eb0c-4b7d-9675-11e1eabfd0b8
This dependency is unused after fixing errors reported by the
`non_std_lazy_statics` Clippy lint.
@paldepind
paldepind marked this pull request as ready for review November 11, 2026 11:44
@paldepind
paldepind requested review from a team as code owners November 11, 2026 11:44

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Changes in unified LGTM

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