After the issues that happened with Linus from Linus Tech Tips breaking Pop!_OS during the switch to Linux challenge, the APT package manager has been upgraded to prevent future issues happening.
We covered the problem in our previous article, where System76 were going to apply their own fix to prevent a dialogue appearing that allowed users to end up removing essential packages. At the same time, System76 were also talking with the APT team to get an official fix and one has now been created and released with APT 2.3.12.
The issue shouldn't have come up often, and was the result of the Steam package breaking, with APT in terminal mentioning lots of different things that could easily confuse users. To continue you needed to enter "Yes, do as I say!" to progress, which you should probably never do since the warning was there for a reason - essential packages being removed.
Picture Source: YouTube - oh dear.
Now, that option has been removed and APT will no longer have its solver attempt to remove essential or protected packages, so any dependency problem needs to be resolved manually. As a result your package won't install, remove or upgrade if there's conflicts but at least you have an actual working system. It can be overridden still but it won't tell you explicitly how to do so in the error messaging to prevent people just doing it anyway again.
Looks like Pop!_OS is already readying to bring in the changes. It's likely other distributions using APT will follow during their regular update patterns.