AH HA! @petr-sedlacek I thought the problem was: the oracle provided version of virtualbox depends on libcurl3, and the canonical provided version is 5.0 doesn't have 64-bit support (or at least, it doesn't work yet).
Whelll.... Turns out I was downloading the wrong version from Oracle. There is a "xenial" version of 5.2_5.2.22-126460, and a "bionic" version. That's right, two different versions of the same version. EXCELLENT! Install the copy of virtualbox for bionic and all is right with the world. I apologize for my annoyance :) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to curl in Ubuntu. https://bugs.launchpad.net/bugs/1754294 Title: After last updated libcurl3 on libcurl4, some apps are removed. Status in curl package in Ubuntu: Confirmed Bug description: Hi! After last updated libcurl3 on libcurl4, system (Kubuntu 18.04 bionic) deleted such applications as: virtualbox-5.2 opera-stable slack-desktop mongodb I really need these applications, I installed them with broken dependencies, but they are deleted after each update. Is it possible to make the dependence of the libcurl3 in libcurl4, and not remove it altogether from system? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/curl/+bug/1754294/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp