Unused Imports

[blkmlk]

Hi! Is there a configuration parameter that removes unused imports?

[wellkilo]

No. rustfmt is intentionally a formatter, not an unused-code analyzer, so it can reorder or regroup imports but does not decide that an import is semantically unused and delete it.

Use the compiler/Clippy fix path instead:

cargo fix --allow-dirty --allow-staged
# or for the common broader pass
cargo clippy --fix --allow-dirty --allow-staged --all-targets --all-features

Review the diff afterwards, especially when conditional compilation or feature-specific imports are involved. IDE “organize imports” actions are another option, but they are separate from rustfmt.

The related rustfmt settings only control formatting:

• reorder_imports = true|false alphabetizes import groups.
• imports_granularity controls how imports are merged/grouped.

Neither performs unused-import analysis. Current configuration reference: reorder_imports and imports_granularity.

If this clarifies the formatter/linter boundary, please mark the reply as accepted.