fontbakery complains about nested components which cause problems in some ancient versions of macOS. What would be the smartest way to resolve this? (Other than manually changing the sources, e.g. changing the recipe for Alphatonos from "tonos_Alpha" to "tonos_A" etc.)
I tried this fontTools snippet https://github.com/fonttools/fonttools/issues/1506
but I don't think it worked.
Can tools like fontmake / gftools fix this automagically?
Flattening the entire FontLab source before exporting to UFO bumps the font size from 136 to 221 kB. I could re-detect composites but FontLab does a nasty job here reordering some contours and variable compatibility goes away.