Pants doesn't build out of the box on arm64/alpine

[sureshjoshi]

Right now, psutil is on an old version without musl wheels (7.2.0 adds them), and hdrhistogram doesn't have them.

hdrhistogram still tries to build on my machine using musl-clang which isn't available, even after installing clang. So, need to dig in whether I'm missing some flags, env vars, an alias, or what. I'd rather not have to build clang from scratch.

error: cannot produce cdylib for `engine v0.0.1 (pants/src/rust/engine)` as the target `aarch64-unknown-linux-musl` does not support these crate types

[jsirois]

To be clear, I'm confused by your comments because they have no obvious connection to your error message, but your error message makes it look like you're missing this:

• https://github.com/pex-tool/pex.rc/blob/main/.cargo/config.toml
• https://github.com/pex-tool/pex.rc/blob/9630f8f3c366d1e99dd91f410cf8a6a684110fbc/build.rs#L35-L38