On Mon, 22 Jul 2019 at 09:05:20 +0100, Simon McVittie wrote: > The --upgrade option is most important if you are dealing with a source > package that builds non-co-installable binary packages
Real-world examples include nginx (nginx-light and nginx-full) and exim4 (exim4-daemon-light and exim4-daemon-heavy). Thankfully, this pattern seems to be less common than I remember it being in the past. smcv