Run "makecache" periodically to keep the cache ready.

dnf5.spec

@@ -263,12 +263,23 @@ DNF5 is a command-line package manager that automates the process of installing,
 upgrading, configuring, and removing computer programs in a consistent manner.
 It supports RPM packages, modulemd modules, and comps groups & environments.
 
+%post
+%systemd_post dnf5-makecache.timer
+
+%preun
+%systemd_preun dnf5-makecache.timer
+
+%postun
+%systemd_postun_with_restart dnf5-makecache.timer
+
 %files -f dnf5.lang
 %{_bindir}/dnf5
 %if %{with dnf5_obsoletes_dnf}
 %{_bindir}/dnf
 %{_bindir}/yum
 %endif
+%{_unitdir}/dnf5-makecache.service
+%{_unitdir}/dnf5-makecache.timer
 
 %if 0%{?fedora} || 0%{?rhel} > 10
 %{_bindir}/microdnf