spec: If DNF5 obsoletes DNF, do not build dnf and yum packages

Fedora CI installability and rpmdeplint tests failed on Fedoras where
dnf5 obsoletes dnf and yum packages because the tests attempt to
install just built dnf and yum packages, but DNF5 refuses installing
them because they are obsoleted by an already installed dnf5:

     --------------------------------------------------------
    |                                                        |
    |   Running install test for dnf-0:4.21.0-3.fc41.noarch  |
    |                                                        |
    --------------------------------------------------------
    Updating and loading repositories:
     Repo for 121841198 Brew build          100% |   4.7 MiB/s |   4.8 KiB |  00m00s
    Repositories loaded.
    Failed to resolve the transaction:
    Problem: problem with installed package
      - installed package dnf5-5.2.5.0-2.fc41.x86_64 obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - package dnf5-5.2.5.0-2.fc41.x86_64 from fedora obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - package dnf5-5.2.5.0-2.fc41.x86_64 from updates obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - package dnf5-5.2.5.0-2.fc41.x86_64 from rawhide obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - package dnf5-5.2.5.0-2.fc41.x86_64 from fedora-41-buildroot obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - package dnf5-5.2.5.0-2.fc41.x86_64 from testing-farm-tag-repository obsoletes dnf < 5 provided by dnf-4.21.0-3.fc41.noarch from brew-121841198
      - conflicting requests

   (The same happesn for yum package.)

Solution this patch implements is not building the two obsolete
packages. At the end, they cannot be installed.

dnf.spec

@@ -219,15 +219,17 @@ mkdir -p %{buildroot}%{py3pluginpath}/__pycache__/
 mkdir -p %{buildroot}%{_localstatedir}/log/
 mkdir -p %{buildroot}%{_var}/cache/dnf/
 touch %{buildroot}%{_localstatedir}/log/%{name}.log
+%if %{without dnf5_obsoletes_dnf}
 ln -sr %{buildroot}%{_bindir}/dnf-3 %{buildroot}%{_bindir}/dnf
-ln -sr %{buildroot}%{_bindir}/dnf-3 %{buildroot}%{_bindir}/dnf4
-ln -sr %{buildroot}%{_datadir}/bash-completion/completions/dnf-3 %{buildroot}%{_datadir}/bash-completion/completions/dnf4
 ln -sr %{buildroot}%{_datadir}/bash-completion/completions/dnf-3 %{buildroot}%{_datadir}/bash-completion/completions/dnf
 for file in %{buildroot}%{_mandir}/man[578]/dnf4[-.]*; do
     dir=$(dirname $file)
     filename=$(basename $file)
     ln -sr $file $dir/${filename/dnf4/dnf}
 done
+%endif
+ln -sr %{buildroot}%{_bindir}/dnf-3 %{buildroot}%{_bindir}/dnf4
+ln -sr %{buildroot}%{_datadir}/bash-completion/completions/dnf-3 %{buildroot}%{_datadir}/bash-completion/completions/dnf4
 mv %{buildroot}%{_bindir}/dnf-automatic-3 %{buildroot}%{_bindir}/dnf-automatic
 rm -vf %{buildroot}%{_bindir}/dnf-automatic-*
 
@@ -238,6 +240,7 @@ mv -f %{buildroot}%{confdir}/%{name}-strict.conf %{buildroot}%{confdir}/%{name}.
 rm -vf %{buildroot}%{confdir}/%{name}-strict.conf
 %endif
 
+%if %{without dnf5_obsoletes_dnf}
 # YUM compat layer
 ln -sr  %{buildroot}%{confdir}/%{name}.conf %{buildroot}%{_sysconfdir}/yum.conf
 ln -sr  %{buildroot}%{_bindir}/dnf-3 %{buildroot}%{_bindir}/yum
@@ -247,10 +250,14 @@ ln -sr  %{buildroot}%{pluginconfpath} %{buildroot}%{_sysconfdir}/yum/pluginconf.
 ln -sr  %{buildroot}%{confdir}/protected.d %{buildroot}%{_sysconfdir}/yum/protected.d
 ln -sr  %{buildroot}%{confdir}/vars %{buildroot}%{_sysconfdir}/yum/vars
 %endif
+%endif
 
 %if %{with dnf5_obsoletes_dnf}
 rm %{buildroot}%{confdir}/%{name}.conf
-rm %{buildroot}%{_mandir}/man5/%{name}.conf.5*
+rm %{buildroot}%{_datadir}/locale/*/LC_MESSAGES/%{name}.mo
+rm %{buildroot}%{_mandir}/man8/yum2dnf.8*
+rm %{buildroot}%{_unitdir}/%{name}-makecache.service
+rm %{buildroot}%{_unitdir}/%{name}-makecache.timer
 %endif
 
 %if 0%{?fedora} >= 41 || 0%{?rhel} >= 10
@@ -266,6 +273,7 @@ ctest -VV
 popd
 
 
+%if %{without dnf5_obsoletes_dnf}
 %post
 %systemd_post dnf-makecache.timer
 
@@ -274,6 +282,7 @@ popd
 
 %postun
 %systemd_postun_with_restart dnf-makecache.timer
+%endif
 
 
 %post automatic
@@ -286,6 +295,7 @@ popd
 %systemd_postun_with_restart dnf-automatic.timer dnf-automatic-notifyonly.timer dnf-automatic-download.timer dnf-automatic-install.timer
 
 
+%if %{without dnf5_obsoletes_dnf}
 %files -f %{name}.lang
 %{_bindir}/%{name}
 %if 0%{?rhel} && 0%{?rhel} <= 7
@@ -299,6 +309,7 @@ popd
 %{_mandir}/man5/dnf-transaction-json.5*
 %{_unitdir}/%{name}-makecache.service
 %{_unitdir}/%{name}-makecache.timer
+%endif
 
 %files data
 %license COPYING PACKAGE-LICENSING
@@ -333,6 +344,7 @@ popd
 %endif
 %{_tmpfilesdir}/%{name}.conf
 
+%if %{without dnf5_obsoletes_dnf}
 %files -n %{yum_subpackage_name}
 %{_bindir}/yum
 %{_mandir}/man8/yum.8*
@@ -342,20 +354,20 @@ popd
 %{_mandir}/man5/yum.conf.5.*
 %{_mandir}/man8/yum-shell.8*
 %{_mandir}/man1/yum-aliases.1*
-%if %{without dnf5_obsoletes_dnf}
 # If DNF5 does not obsolete DNF, protected.d/yum.conf should be owned by DNF
 %config(noreplace) %{confdir}/protected.d/yum.conf
 %else
-# If DNF5 obsoletes DNF
-# No longer using `noreplace` here. Older versions of DNF 4 marked `yum` as a
-# protected package, but since Fedora 39, DNF needs to be able to update itself
-# to DNF 5, so we need to replace the old /etc/dnf/protected.d/yum.conf.
-%config %{confdir}/protected.d/yum.conf
+%exclude %{_sysconfdir}/yum.conf
+%exclude %{confdir}/protected.d/yum.conf
+%exclude %{_mandir}/man5/yum.conf.5.*
+%exclude %{_mandir}/man8/yum-shell.8*
+%exclude %{_mandir}/man1/yum-aliases.1*
 %endif
 %else
-%exclude %{_sysconfdir}/yum.conf
+# No %%{yum_subpackage_name} package
 %exclude %{confdir}/protected.d/yum.conf
 %exclude %{_mandir}/man5/yum.conf.5.*
+%exclude %{_mandir}/man8/yum.8*
 %exclude %{_mandir}/man8/yum-shell.8*
 %exclude %{_mandir}/man1/yum-aliases.1*
 %endif