I can load [hsv2rgb] in Pd Extended 0.42-5, but it actually load markex/hsv2rgb instead, which is a compiled object, not an abstraction - these are the loaded objects in the help file of gem/hsv2rgb by the way, so that was very confusing, making me believing you could "lock" an abstraction somehow with Gem, leading me to question on how can one do that in that other thread...
I tested the "new way" with cyclone and it kinda works, despite the consistency error. So maybe you mean about a new version of Gem that wasn't released yet, and that you'd have to compile yourself?
Anyway, I'm really confused and curious to know if this is being done, if there's a bug, whatever's going on.
cheers