Re: dnf gone wild??

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On Thu, Nov 16, 2017 at 10:25:38AM -0500, Neal Becker wrote:
> [nbecker@nbecker2 ~]$ sudo dnf repoquery --whatrequires plexmediaserver
> [nbecker@nbecker2 ~]$ sudo dnf remove plexmediaserver 
[...]
> ... a list of 438 packages!!
> Why would dnf want to remove them?!?

It thinks that these packages were only installed to resolve
plexmediaserver dependencies in the first place. The intention is that
`dnf install plexmediaserver` and `dnf remove plexmediaserver` should
be inverse operations, without the side-effect of leaving a bunch of
packages plexmediaserver pulled in as dependencies installed even
though you no longer need them.

Although this is finally fixed, there was a long-standing lack of
communicationb between DNF and PackageKit which may result in packages
which were deliberately installed not being marked as such. 

See `dnf repoquery --userinstalled` to list packages marked as
manually/intentionally installed.

Use `dnf mark install packagename` to mark something as something you
want to not be autoremoved. Or `dnf mark install *`.

Use `dnf remove plexmediaserver --noautoremove` to remove
plexmediaserver without trying to be smart about unused dependencies
now.

Set `clean_requirements_on_remove` to False in dnf.conf to disable this
behavior entirely.

-- 
Matthew Miller
<mattdm@xxxxxxxxxxxxxxxxx>
Fedora Project Leader
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