Describe the the feature you'd like
The ability to add new custom infusen types for the metallurgic infuser.
I want to add lapis ass an infusen type.

Describe alternatives you've considered
There are no real alternatives when you want the metallurgic infuser with lapis in your custom recipes.

Additional context
It would be great if we can just add infusen types with datapacks.

@Robball14 i was not able to change it with in the datapacks. I added a tag for mekanism:lapis and then i added a infusion_conversion for mekanism:lapis and get followring error

Couldn't load infuse_type tag mekanism:lapis as it is missing following references: mekanism:lapis

Can you tell me what i am missing?

infusion_conversion/lapis/from_dust.json {"type":"mekanism:infusion_conversion","input":{"ingredient":{"item":"minecraft:lapis_lazuli"}},"output":{"infuse_type":"mekanism:lapis","amount":10}}

tags/infuse_types/lapis.json {"values":["mekanism:lapis"]}

Full Log https://pastebin.com/eN6Jhua1

did you ever find the solution

that's how it works, you can change it with datapacks and stuff like that

mekanism/Mekanism-Feature-Requests#21

@Robball14 i was not able to change it with in the datapacks.
I added a tag for mekanism:lapis and then i added a infusion_conversion for mekanism:lapis and get followring error

Couldn't load infuse_type tag mekanism:lapis as it is missing following references: mekanism:lapis

Can you tell me what i am missing?

infusion_conversion/lapis/from_dust.json
{"type":"mekanism:infusion_conversion","input":{"ingredient":{"item":"minecraft:lapis_lazuli"}},"output":{"infuse_type":"mekanism:lapis","amount":10}}

tags/infuse_types/lapis.json
{"values":["mekanism:lapis"]}

Full Log
https://pastebin.com/eN6Jhua1