$ apt-cache showpkg 'perl(SNMP_Session.pm)' Package: perl(SNMP_Session.pm) ... Reverse Provides: mrtg 2.17.7-alt1:sisyphus+255311.100.1.1@1595579467 perl-SNMP_Session 1.12-alt1@1262673566 $ rpmquery -lp Sisyphus/files/x86_64/RPMS/mrtg-2.17.7-alt1.x86_64.rpm |grep -F .pm /usr/lib/mrtg2/BER.pm /usr/lib/mrtg2/MRTG_lib.pm /usr/lib/mrtg2/Net_SNMP_util.pm /usr/lib/mrtg2/SNMP_Session.pm /usr/lib/mrtg2/SNMP_util.pm /usr/lib/mrtg2/locales_mrtg.pm $ rpmquery --provides -p Sisyphus/files/x86_64/RPMS/mrtg-2.17.7-alt1.x86_64.rpm perl(BER.pm) = 1.050 perl(MRTG_lib.pm) = 2.100.016 perl(Net_SNMP_util.pm) = 1.0.020 perl(SNMP_Session.pm) = 1.120 perl(SNMP_util.pm) = 1.150 perl(locales_mrtg.pm) = 0.070 mrtg = 2.17.7-alt1:sisyphus+255311.100.1.1 mrtg shall not provide any of these perl modules.
mrtg-2.17.7-alt2 -> sisyphus: Sun Nov 08 2020 Dmitry V. Levin <ldv@altlinux> 2.17.7-alt2 - NMU. - Filtered out all perl Provides and the corresponding Requires as all /usr/lib/mrtg2/*.pm files are for internal mrtg use only (closes: #39210).