Hi all,
zeromq2 and zeromq3 were additional/compat packages that made it possible to ship multiple versions of zeromq (namely the old versions 2 and 3). These days, they don't get any bugfixes anymore and the version 4 should be used were possible. There should have been enough time to port all dependant packages to zeromq-4 and I like to retire these packages.
The current dependencies are:
# dnf repoquery --whatrequires zeromq2 --alldeps
perl-ZMQ-LibZMQ2-0:1.09-7.fc23.x86_64
perl-ZeroMQ-0:0.23-11.fc23.x86_64
zeromq2-devel-0:2.2.0-14.fc23.i686
zeromq2-devel-0:2.2.0-14.fc23.x86_64
# dnf repoquery --whatrequires zeromq3 --alldeps
perl-ZMQ-LibZMQ3-0:1.19-3.fc23.x86_64
zeromq3-devel-0:3.2.5-3.fc23.i686
zeromq3-devel-0:3.2.5-3.fc23.x86_64
The maintainer of perl-ZMQ-LibZMQ* should be aware of this [1,2] and is also in CC. Feel free to take over the zeromq2 and zeromq3 packages, otherwise I'll retire it next week.
Best,
Thomas