v0.4.0

0.4.0 (2026-10-02)

Features

• Added bound propagation to #[derive(IntoOwned)].

  For instance:

  #[derive(IntoOwned)]
  struct Wrapped<T: Bound> {
      pub value: T,
  }

  Will generate the following implementation:

  impl<T: Bound> IntoOwned for Wrapped<T>
  where
      T: IntoOwned,
      <T as IntoOwned>::Owned: Bound,
  {
      type Owned = Wrapped<<T as IntoOwned>::Owned>;
  
      fn into_owned(self) -> Self::Owned {
          Self::Owned {
              value: IntoOwned::into_owned(self.value),
          }
      }
  }

Changes

• Improved lifetime dependency resolution and promotion.

Fixes

• Fixed several regressions in expansion.