generic-array dependency exists despite const_generics being stabilized

[kageru]

While using one of your other crates (aes-gcm-siv) for a project, I noticed the complicated signatures of some key and cipher types which seem to be caused by the generic-array crate that was reexported by the cipher module in this repository.
With const_generics stabilized in Rust 1.51, I was wondering if that crate now offers anything that isn’t possible in standard Rust. If not, are there plans to migrate from generic-array to [T; N] types?

[newpavlov]

The stabilized const generics MVP is not sufficient for our needs. At the very least we will need stabilized generic_const_exprs. Also see RustCrypto/hashes#303.

[kageru]

I see. Thanks for the explanation.

[tarcieri]

We have a tracking issue for this here now: #970