The names aren't ambiguous – if apt prints no architecture it is ALWAYS the native architecture. This is this way for compatibility reasons as apt hadn't previously printed any architecture – because they were all native – so old tools, scripts, processes, … sticking to the common case of single-architecture systems do not need to be touched/fixed.
It just happens to be a different convention than dpkg is using – which prints the architecture only if it could be ambiguous, like for all packages marked as M-A:same (Since recently it also shows the architecture for M-A:foreign packages of a non-native architecture, too) and in exchange requires an architecture to be given (for M-A:same) even if it isn't ambiguous [which broke pre-multiarch tools, but most tools interacting with dpkg do this via apt which shielded them]. APT can't operate with this convention as basically every package is available in all architectures, so a package name is always ambiguous and hence all package names would need to be fully arch-qualified all the time. That would be a lot of noise… ** Changed in: apt (Ubuntu) Status: New => Opinion -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576960 Title: apt-mark prints ambiguous package name To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1576960/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs