Read site settings from an isolated database and inspect the sources.list written into the image. Stop at an injected package-metadata failure without downloading packages.
Run genimage and inspect the arguments passed to debootstrap instead of evaluating an extracted assignment. Keep the existing ppc64le pass-through explicit.
Run complete rendered installers and their emitted postboot scripts in
private Linux filesystems. Cover service selection, flag aliases, defaults,
debug output, ordering and failures, and select the test in CI.