From: "CLOSE Dave" <Dave.Close(a)us.thalesgroup.com>
Several folks have responded that they don't see the same behavior I do.
I don't doubt that. Even for me, the behavior is erratic, sometimes very
slow, sometimes not.
The resolution is fast, it can delay because of some expensive plugin hook call.
Can you try this:
"dnf install <pkg> --disableplugin=\*"
If you find a general reproducer, please report it [1] with these outputs attached:
# rpm -q libsolv dnf hawkey
# dnf repoquery --installed dnf-plugin\*
Thanks,
Honza
[1]
https://github.com/rpm-software-management/dnf/wiki/Bug-Reporting