UPDATE - PROGRESS ON THIS IS HAPPENING NOW Remember the terminology to understand this post
GEGL Effects (my layer effects plugin for Gimp)
GEGL Styles ( the branch of GEGL Effects designated for Gimp 3 that is not public)
zzstrokebevelimage (the special outline dependency that both effects and styles use)
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I am struggling but making progress in baking in GEGL Styles special outline "zzstrokebevelimage" all by myself. This will get rid of the dependency "zzstrokebevelimage" that is in GEGL Effects. GEGL Styles will only require these three binaries and obviously the user will never see them as they will be part of GEGL official. Blendable Chamfer and Inner Shadow are not hidden operations and will be counterparts to my plugins (lb:bevel) and (lb:innerglow)
We are getting really close to the day that GEGL Styles gets baked into Gimp 2.99.