Rerunning the minimize manual script in an xubuntu image with some extra tracking I see the following chain causing it to be marked as automatically installed:
1. xubuntu-desktop Recommends indicator-messages
2. indicator-messages Recommends ubiquity-frontend-gtk (due to indicator-renderer Provides)
3. ubiquity-frontend-gtk Depends on ubiquity
4. ubiquity Depends on cryptsetup, Recommends lvm2
We later on remove ubiquity in cleanup, but don't mark any remaining autoremovable stuff manually installed.
Rerunning the minimize manual script in an xubuntu image with some extra tracking I see the following chain causing it to be marked as automatically installed:
1. xubuntu-desktop Recommends indicator-messages frontend- gtk (due to indicator-renderer Provides) frontend- gtk Depends on ubiquity
2. indicator-messages Recommends ubiquity-
3. ubiquity-
4. ubiquity Depends on cryptsetup, Recommends lvm2
We later on remove ubiquity in cleanup, but don't mark any remaining autoremovable stuff manually installed.