Patrice Dumas (pertusus(a)free.fr) said:
Obssoletes: gtkhtml3 < 3.12.1
But I may very well be missing something.
Not sure you want to Obsolete it, depending on where you're placing
the package.
Also
* maybe the devel package is not needed?
It's a different ABI - you can still develop against the old one
(as it does actually take some porting, and depending on what you
link against, porting may not be possible.)
Bill