Building Rust on Apple Silicon w/ buck2

[pulanski]

I was playing around with buck2 and trying to use it to build the prelude workspace seen in the examples folder of the repo and was running into issues. All of the other toolchains seem to be working except for the Rust one. For clarification, I'm running buck2 on an M1 Mac using homebrew for package management if that helps. I was wondering if anyone has any ideas on resolving the issues. Relevant error messages are provided below for reference.

buck2 build ...
File changed: root//.git/objects/maintenance.lock
File changed: root//.git/modules/prelude/FETCH_HEAD
File changed: root//.git/modules/prelude/objects/maintenance.lock
Action failed: root//rust:main (rustc bin-pic-static_pic-link/main-link bin,pic,link [diag])
Local command returned non-zero exit code 1
Reproduce locally: /usr/bin/env "PYTHONPATH=buck-out/v2/gen/prelude/213ed1b7ab869379/rust/tools/__rustc_action__/__rust ...<omitted>... .py @buck-out/v2/gen/root/213ed1b7ab869379/rust/__main__/bin-pic-static_pic-link/main-link-diag.args (run buck2 log what-failed to get the full command)
stdout:
stderr:
arch: posix_spawnp: rustc: Bad CPU type in executable

Build ID: dc3e3c7d-a1d0-42cd-8399-392a63445c30
Jobs completed: 9. Time elapsed: 0.3s. Cache hits: 0%. Commands: 1 (cached: 0, remote: 0, local: 1)
BUILD FAILED
Failed to build 'root//rust:main (prelude//platforms:default#213ed1b7ab869379)'

Output from log what-failed

buck2 log what-failed
Showing commands from: buck2 build ...
build root//rust:main (prelude//platforms:default#213ed1b7ab869379) (rustc bin-pic-static_pic-link/main-link bin,pic,link [diag]) local env -- "TMPDIR=~/buck2/examples/prelude/buck-out/v2/tmp/root/213ed1b7ab869379/rust/main/rustc/_buck_130845f0f81d454f" "BUCK2_DAEMON_UUID=2833dbcc-04d4-4384-a79c-6a57c3c7866d" /usr/bin/env "PYTHONPATH=buck-out/v2/gen/prelude/213ed1b7ab869379/rust/tools/rustc_action/rustc_action" python3 buck-out/v2/gen/prelude/213ed1b7ab869379/rust/tools/rustc_action/rustc_action.py @buck-out/v2/gen/root/213ed1b7ab869379/rust/main/bin-pic-static_pic-link/main-link-diag.args

Not sure if I need to change some sort of configuration for rustc in the context of buck2 or what a possible solution would be. Appreciate any ideas, thanks.

[zertosh]

I know what the issue is (because it's my fault). I'm looking into to a fix right now