### Bug Description The `rust` plugin does correctly handle cross-compiling, instead still building for the host architectures. ### To Reproduce 1. Use the `rust` plugin with a different target architecture from the host architecture 2. Examine the output `elf` file(s) ### part yaml ```shell parts: uv: plugin: rust source: https://github.com/astral-sh/uv.git source-tag: $SNAPCRAFT_PROJECT_VERSION build-packages: - cmake build-attributes: - enable-patchelf organize: uv: bin/uv uvx: bin/uvx lib*.so: lib/ ``` ### Relevant log output ```shell $ unsquashfs astral-uv_0.5.29_armhf.snap Parallel unsquashfs: Using 16 processors 5 inodes (321 blocks) to write [==========================================================================================================|] 326/326 100% created 5 files created 4 directories created 0 symlinks created 0 devices created 0 fifos created 0 sockets created 0 hardlinks lengau@ratel:~/Projects/uv-snap$ file squashfs-root/bin/uv squashfs-root/bin/uv: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /snap/core24/current/lib64/ld-linux-x86-64.so.2, BuildID[sha1]=5ea30677c06472fa51db130472ba4f97b74a1786, for GNU/Linux 3.2.0, stripped ```