Why?

KDE is going to be in EPEL 8.
xapian-core is needed to build kf5-akonadi-search.
I already have xapian-core built in EPEL8-playground.
If you do not want to support a package in EPEL 8, then I am willing to build and maintain it there.
If you were planning on retiring the package from Fedora, then we should have a conversation with the Fedora KDE team to see if we can get it out of kf5-akonadi-search.
But, if you don't mind maintaining xapian-core in EPEL8, then I will let you have it.

FEDORA-EPEL-2019-1ccde1a529 has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-1ccde1a529

FEDORA-EPEL-2019-06e8dfc085 has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-06e8dfc085

xapian-core-1.4.13-1.el8 has been pushed to the Fedora EPEL 8 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-06e8dfc085

FEDORA-EPEL-2019-2b74d7ac8f has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-2b74d7ac8f

xapian-core-1.4.13-1.el8 has been pushed to the Fedora EPEL 8 stable repository. If problems still persist, please make note of it in this bug report.

xapian-bindings-1.4.13-1.el8 has been pushed to the Fedora EPEL 8 stable repository. If problems still persist, please make note of it in this bug report.