Has anyone build Xiphos on Rocky-9?

Xiphos (xiphos.org) is a bible study app that uses the Sword libraries (crosswire.org).

I’m trying to compile it on Rocky 9.1 and I am hitting a couple of unmet dependencies that I just can’t find anywhere:

gtkhtml-editor-4.0
and
libgtkhtml-4.0.

So, has anyone been able to build it on Rocky 9/9.1 or RHEL9 or Centos9 or, I suppose, even Oracle Linux 9???

Thanks in advance!

Fred