[Bug 2209413] New: Prepare for DNF 5, don't depend on `dnf`

https://bugzilla.redhat.com/show_bug.cgi?id=2209413

            Bug ID: 2209413
           Summary: Prepare for DNF 5, don't depend on `dnf`
           Product: Fedora
           Version: rawhide
          Hardware: All
                OS: Linux
            Status: NEW
         Component: system-config-language
          Severity: high
          Assignee: pnemade(a)redhat.com
          Reporter: egoode(a)redhat.com
        QA Contact: extras-qa(a)fedoraproject.org
                CC: i18n-bugs(a)lists.fedoraproject.org, pnemade(a)redhat.com
  Target Milestone: ---
    Classification: Fedora



(I'm filing issues with all the packages that currently depend on `dnf`.)

DNF 5 is a new package manager that will replace DNF 4 in Fedora 39+:  Starting
in Fedora 39, the `dnf` command will be provided by the `dnf5` package rather
than the `dnf` package, and `dnf5` will obsolete `dnf`. Since
system-config-language currently depends on DNF 4, it should choose one of the
following strategies to avoid breaking the Fedora upgrade:

- Add support for DNF 5, and depend on the `dnf5` package in Fedora 39+ instead
of `dnf`. Builds of DNF 5 are available in this COPR repository:
https://copr.fedorainfracloud.org/coprs/rpmsoftwaremanagement/dnf-nightly/, and
documentation is available here: https://dnf5.readthedocs.io/en/latest/.
- Alternatively, or in the meantime, change the system-config-language package
to depend on `python3-dnf` instead of `dnf`, and call the `dnf-3` binary
instead of `dnf`. The old DNF 4 command will still be available in the
distribution, but only as `dnf-3` (the binary is called `dnf-3`  rather than
`dnf4` for historical reasons; it is the "Python 3 version" of DNF). The first
option is preferred to this one; it is not recommended to modify installed
software using both DNF 4 and DNF 5 on the same system.
- Or, if this package is no longer being maintained, consider removing it from
Fedora.

At some point, this project should adopt DNF 5, but the immediate issue is
removing the dependency on `dnf`. We are planning to replace DNF with DNF5 in
Fedora Rawhide very soon, by 2023-06-01, and the system-config-language package
will break as long as it still depends on the `dnf` package.

For more information about the switch to DNF 5, see
https://fedoraproject.org/wiki/Changes/ReplaceDnfWithDnf5.

Reproducible: Always


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https://bugzilla.redhat.com/show_bug.cgi?id=2209413