Multiple system support

[olive sinew]

Hm, but this module appears to have multiple systems: https://gitlab.com/tposney/midi-qol/-/blob/master/module.json

[steady portal]

Multiple languages, not systems

I don't think "lang" is even valid field.

[olive sinew]

https://gitlab.com/tposney/midi-qol/-/blob/master/module.json#L5

[steady portal]

That's main system support, not per pack system field.

[safe spoke]

systems as an array works outside of packs. Just not inside the packs block