musl path detection fails for powerpc systems

[pkubaj]

I use a ppc64le workstation with musl. When I try to generate initramfs with ugrd, it fails with:
CRITICAL | Musl libc is enabled, but the musl search path was not found: /etc/ld-musl-ppc64le.path
Indeed this file is not present, but /etc/ld-musl-powerpc64le.path is:

talos-powerpc64le ~ # cat /etc/ld-musl-powerpc64le.path
/lib
/usr/lib/gcc/powerpc64le-gentoo-linux-musl/13
/usr/lib/gcc/powerpc64le-unknown-linux-musl/15
/usr/lib
/usr/local/lib
/usr/lib/llvm/21/lib
/usr/lib/llvm/20/lib
/usr/lib/llvm/19/lib

[desultory]

I use a ppc64le workstation with musl. When I try to generate initramfs with ugrd, it fails with: CRITICAL | Musl libc is enabled, but the musl search path was not found: /etc/ld-musl-ppc64le.path Indeed this file is not present, but /etc/ld-musl-powerpc64le.path is:

talos-powerpc64le ~ # cat /etc/ld-musl-powerpc64le.path
/lib
/usr/lib/gcc/powerpc64le-gentoo-linux-musl/13
/usr/lib/gcc/powerpc64le-unknown-linux-musl/15
/usr/lib
/usr/local/lib
/usr/lib/llvm/21/lib
/usr/lib/llvm/20/lib
/usr/lib/llvm/19/lib

Thanks for testing this on PPC, I've never tested on that arch and it seems to be an issue with that.

https://github.com/desultory/ugrd/blob/main/src/ugrd/base/core.py#L403

It's taken from the machine architecture, (from uname). I'm not sure if it's correct that it uses the full name, but it would be easy to make it attempt "powerpc" if "ppc" is supplied.

I'm asking around for more info about this because I've never touched PPC and am basically a noob when it comes to muls stuff still. I think gentoo may have a bit of custom tooling for musl and I'm not sure if this is related to that.