Ah, i did not upgrade libapt-pkg5.0 as i wanted to leave some packages for the auto-upgrader test case.
Upgrading those two: ii libapt-inst2.0:amd64 1.4.6~17.04.1 amd64 deb package format runtime library ii libapt-pkg5.0:amd64 1.4.6~17.04.1 amd64 package management runtime library I now get on zesty, no segfault for case #1 & error message for case #2, as expected. ** Tags removed: verification-failed-zesty ** Tags added: verification-done-zesty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1694697 Title: build-depends keeps OR flag if end of or group is ignored To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1694697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs