repoquery: add filtering based on From repository.

[Ricky-Tigg]

v. 4.14.0 | Hello. Values reported by

• dnf --installed repository-packages updates-testing list
• dnf rq --installed --repo=updates-testing

while sent through pipe wc -l, are respectively non-null and null, despite they have similar goals. Since the former command executed as intended, the value of the latter command is expected not to differ from the value resulting from the former command.

[kontura]

Yes, the repoquery options --installed and --repo=.. are not compatible or rather they always result in an empty set because installed packages are in a special @System repo.

Probably the best solution would be to allow filtering packages by their from_repo attribute, that is the repo from which they come from.

We could implement a way to do that in dnf5 (possibly add a new repoquery option --from-repo=...) therefore I am transferring the issue to dnf5.