Completes the matrix: all five distros now pass both `test` and `test-ready`,
validated end-to-end on the delphi KVM host (QEMU 11.0.2).
Alpine — the generic_ cloud image silently ignores a NoCloud seed, so cloud-init
never ran. Fixes, all confirmed by booting:
- switch to the nocloud_ image variant (built for a local seed),
- start sshd from a runcmd (OpenRC doesn't auto-start it after key injection),
- give the account a throwaway password — Alpine's non-PAM sshd refuses pubkey
auth for a cloud-init-locked ('!') account, unlike the UsePAM=yes distros,
- install sudo via cloud-init packages: (the minimal image has none, so the
test-ready `sudo apk add` prereq failed).
Also add instance-id to the NoCloud meta-data, which the nocloud image requires.
NixOS — publishes no downloadable cloud qcow2 (Hydra builds AMIs), so the harness
now BUILDS one with nixos-generators (new scripts/linux-install-test-nixos.nix:
cloud-init for the key, flakes enabled, deliberately no python/git/pipx).
ensure_base_image branches to build_nixos_image for the nixos distro. The
test-ready prereq uses `nix profile install` pinned to nixpkgs/nixos-24.11,
because the guest's default unstable registry builds pipx from source and its
test suite currently fails to build.
Validation: 10/10 cells pass, clean teardown, no leaked VMs or run dirs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
didericis
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