Does `elliptic-curve` with only the `serde` feature enabled still require `alloc`?

Hi,

We're trying to use some primitives from the p256 crate on an embedded target and would like to rely on the serde impls it provides, but sadly this transitively pulls in an alloc requirement that we cannot and do not want to satisfy.

Preliminary checks suggest that the problem is that p256/serde activates elliptic-curve/serde, which in turn unconditionally activates its alloc feature.

Is there a way to get rid of this requirement so that we can use the generated serde impls for Signature without being forced to draw in alloc?

Thanks,

Jona

Start by inspecting the feature definitions linked in p256/Cargo.toml and elliptic-curve/Cargo.toml, then trace how enabling p256/serde reaches the alloc requirement. Verify whether the generated serde implementations for Signature can build on the embedded target without alloc; done means serde remains usable while alloc is no longer required.