Describe the bug

By attempting to cross-compile python cryptography I get build but rust bindings are build for host architecture.

Steps To Reproduce

Steps to reproduce the behavior:

1. nix build .#legacyPackages.x86_64-linux.pkgsCross.aarch64-multiplatform.python3Packages.cryptography
2. file result/lib/python3.10/site-packages/cryptography/hazmat/bindings/_rust.abi3.so gives x86-64
3. file result/lib/python3.10/site-packages/cryptography/hazmat/bindings/_openssl.abi3.so gives aarch64

Expected behavior

The rust should be cross compiled as well.

Additional context

Add any other context about the problem here.

I tried to look into it and discovered this PyO3/setuptools-rust#294 but nothing more.

Notify maintainers

@SuperSandro2000

Metadata

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.0.10, NixOS, 23.05 (Stoat), 23.05.20221209.9e4a15b`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.12.0`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`