I'm typesetting a type system! `semantic` is the big winner here, but
also `mathpartir` is nice
Change-Id: I27ee91d30e0fe680377ce48f7539553fd0707684
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3212
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI