I am thinking is some race condition here. It works reliably for me on a fresh install of focal in a VM but on my desktop which has lots of history and lots of packages installed I see the "not supported" error sometimes.
I'll re-open the issue and we'll continue to work on it. ** Changed in: snap-store Status: Fix Released => In Progress -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1867610 Title: snap-store cannot install local deb packages To manage notifications about this bug go to: https://bugs.launchpad.net/snap-store/+bug/1867610/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs