Having a *-sys crate depending on rust "staticlib" crate

[Geobert]

Describe the problem you are trying to solve
I have a *-sys crate wrapping a C lib. This C lib needs some other C functions provided by some C code. I choose the reimplement these functions in Rust in a "shims" crate, as a staticlib.

On top of the *-sys I have a *-rs crate to make my safe wrapper.

What I'm trying to do and don't know if it's possible at the moment, is when using the *-rs crate, it builds the *-sys crate which will build the Rust staticlib.

I've asked on reddit (https://www.reddit.com/r/rust/comments/di6uos/sys_crate_depending_on_a_rust_static_lib_build/) and it doesn't seem possible hence this ticket.

Describe the solution you'd like
Some way to describe a dependency from my *-sys to a Rust staticilb.

If it's already possible, sorry for the bother ^^