Some sort of support for .cargo/config.toml ?

[Fuuzetsu]

We have something like this in our .cargo/config.toml

[target.'cfg(target_arch="x86_64")']
rustflags = "-Ctarget-feature=+fma,+avx2"

[target.'cfg(target_arch="aarch64")']
rustflags = "-Ctarget-cpu=native"

After crate2nix, on x86_64 there's no mention of those explicit target features. We're currently doing a hack where we manually override all of the crates out of Cargo.nix to re-add these but that's quite manual and generally annoying. It'd be very nice if some basic features were supported. Or at least we should have a closed ticket that's explicit about not supporting this or something.

[Ten0]

#345 (comment) may be a generic workaround that avoids having to manually operate on each crate, however it is a bit hacky in that it uses cargoNix.internal to identify the list of crates, then specify the flags for each of them individually.