The Debian single-mirror multiarch approach causes irreconcilable
apt dependency conflicts when both amd64 and arm64 point at the same
repo: the binary-all index is duplicated and certain -dev package pairs
lack Multi-Arch: same. This produces "held broken packages" regardless
of sources.list tweaks.
Ubuntu 22.04 routes arm64 through ports.ubuntu.com/ubuntu-ports, a
separate mirror from archive.ubuntu.com (amd64). This eliminates all
cross-arch index overlaps. Rust is installed via rustup since it is not
pre-installed in the Ubuntu base image. libayatana-appindicator3-dev
is dropped — no tray icon is used by this application.
Co-Authored-By: fix/yaml-heredoc-indent <noreply@local>
9188a63305