Sorry for the late reply - I only noticed this mail yesterday.

On Wed, Jul 25, 2018 at 6:40 PM Vascom <vascom2@gmail.com> wrote:
Hi,
I am updating libbibutils to 6.6. It has soname bump from 5 to 6 in EPEL 7 repo.

Yeah unfortunately libbibutils bumps soname every minor release...
 
Need update dependent packages:
ghc-hs-bibutils
pandoc-citeproc

That's right - for the above reason I started using the bundled bibutils in hs-bibutils: so they have been decoupled for some time in Fedora.

Jens