Oh cool! It appears that I've already packaged cupy's required dependencies for AMD GPU support in the Debian 13 'main' and Ubuntu 24.04 'universe' repos. I also extended the enabled architectures to cover all discrete AMD GPUs from Vega onwards (aside from MI300, ironically). It might be nice to get python3-cupy-rocm added to Debian 13 if this is a library that people find useful.