Clearer error message in caseof layered package conflict

[mscherer]

So today on irc, someone came to ask about this:

10:55:44| > I have git as a layered package. When trying to rpm-ostree upgrade I receive "Resolving dependencies... Forbidden base package replacements: git-core 2.16.2-1.fc28 -> 2.17.0-1.fc28 (updates-testing) failed error: Some base packages would be replaced" Is this an issue I should report somewhere?
10:56:50| > Btw, FAW Version: 28.20180402.n.0

Host system details
FAW Version: 28.20180402.n.0

layered package git (among others)

Expected vs actual behavior

# rpm-ostree update
=> the error message we have seen

Expected:

I think there is several possible solutions.

First, adding a clearer error message:

"If you have layered package, maybe try to remove them".

Second, maybe a better workflow. rpm-ostree see the rpms that are in conflict, so it could just ask to remove them, and then continue as before. This seems the best solution, but not as easy as the first. There is also the question of unattended and default behavior, especially

Steps to reproduce it

Install FAW in the specificed version, install git, and try to upgrade

Would you like to work on the issue?

No, I do not have time, sorry.

[cgwalters]

Dup of #415 and will be solved with #1081

[mscherer]

In the mean time, would just a change of the error message be a good enough workaround ? That's easy and kinda risk-free, and depending on when the PR land, could reduce a bit the friction for people trying FAW ?

[dustymabe]

Dup of #415 and will be solved with #1081

As discussed before #1081 by itself doesn't fix these issues.

[cgwalters]

As discussed before #1081 by itself doesn't fix these issues.

For FAW today it does right? And again in a rojig world we need a history-preserving repository which really implies that things are synchronized anyways.