Comment # 4 on bug 1201572 from Michael Gorse

(In reply to Alynx Zhou from comment #3)
> This is because the SLE version of gimp does not build gimp-plugins-python,
> and Leap 15.4 uses the same binary with SLE.
> 
> Maybe Dominique can help us on why this is not enabled on SLE.

I disabled it there a while ago as part of removing python 2 dependencies.
bsc#1082699