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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.6.1 - 2026-03-13

Fixed

  • Fix compilation when Clone + Copy or PartialEq + Eq where used with automatic bounds (#137 by spirali).

1.6.0 - 2025-08-06

Changed

  • #[serde(...)] attributes are now allowed even when not deriving De/Serialize with #[derive_where(...)].

1.5.0 - 2025-06-08

Added

  • no_drop item-level option to ZeroizeOnDrop which does not implement Drop but instead only asserts that every field implements ZeroizeOnDrop.
  • Support deriving Serde's Deserialize and Serialize trait via Serde's own proc-macro.

Changed

  • Error messages now point to crate features instead of reporting traits as unsupported.

Changed

  • Remove unnecessary validation of the default discriminant type for enums.

Fixed

  • Stop depending on unstable APIs for Eq for ZeroizeOnDrop.

1.4.0 - 2025-05-01

Added

  • Allow skipping fields for Clone, calling Default::default() instead. Note: Clone is excluded from blanket skipping and can only be used with selective skipping to avoid this being a breaking change.

Fixed

  • Support skipping only some variants with Zeroize.

1.3.0 - 2025-04-21

Added

  • Allow lifetime for<'a, ...> bounds in non-bounded generic parameters.

Changed

  • Use the Copy implementation for Clone and the Ord implementation for PartialOrd when custom bounds are present.

Fixed

  • Support skipping only some variants with ZeroizeOnDrop.
  • Only generate single call to zeroize() with ZeroizeOnDrop on multiple fields or variants.

1.2.7 - 2023-12-14

Fixed

  • Apply #[automatically_derived] to all generated implementations.

1.2.6 - 2023-12-04

Fixed

  • Use the Copy implementation for Clone only if no bounds are present.

1.2.5 - 2023-09-03

Changed

  • Use safe casting in PartialOrd and Ord implementations in more cases when possible.
  • Avoid unnecessarily validating the default discriminant type in some cases.
  • Apply default enum discriminant type validation to all representations and make it cross-edition safe.

1.2.4 - 2023-09-01

Fixed

  • Take representation into account when determining the discriminant type.

Changed

  • Use stable methods to retrieve the discriminant in PartialOrd and Ord implementations. Safe methods used with the safe crate feature don't use recursive matches anymore, significantly improving the performance.

1.2.3 - 2023-08-23 [YANKED]

Fixed

  • Don't use Ord in PartialOrd implementations if using any bounds.

1.2.2 - 2023-08-22 [YANKED]

Fixed

  • Avoid collisions between field names and trait method parameters.

Changed

  • PartialOrd implementations now use Ord if applicable.

1.2.1 - 2023-04-14 [YANKED]

Fixed

  • Correctly handle raw identifiers in named fields.

1.2.0 - 2023-03-19 [YANKED]

Changed

  • Updated syn to v2.
  • Debug output of structs that skip fields appears non_exhaustive now.

Deprecated

  • The crate attribute now takes a bare path instead of a path inside a string literal.

1.1.0 - 2023-02-06 [YANKED]

Added

  • incomparable variant and item attribute for PartialEq and PartialOrd derives, yielding false on all comparisons but !=.

1.0.0 - 2022-07-16 [YANKED]

  • No changes.

1.0.0-rc.3 - 2022-03-21

Fixed

  • Support attribute evaluation, e.g. #[cfg(..)] on fields.

Changed

  • Breaking Change: Upgraded MSRV to Rust 1.57.
  • Upgraded to Rust edition 2021.
  • Breaking Change: To prevent breaking invariants, skip groups were introduced: Debug, EqHashOrd, Hash and Zeroize.

1.0.0-rc.2 - 2022-01-25

Added

Changed

  • Breaking Change: Changed to attribute instead of derive proc-macro.

Removed

  • Breaking Change: Remove support for Zeroize(drop).

1.0.0-rc.1 - 2021-12-08

Added

  • Initial release.