Making a modpack based around ores that only spawn in certain biomes. I'm trying to figure out a way to generate veins based on what biome they are in, but I cannot wrap my head around it. So far all I can find are dimension based white/black lists.

Any help/advice would be appreciated.

There is no such option in the system currently.
All veins are allowed to generate anywhere, the only filter is the dimension lists.

Thats too bad. Thank you.