Oh cool! I happened to build something similar a while back, because I was frustrated with the way that the Unix `cal` program laid out all the months in a 3 x 4 grid instead of in a continuous format:

https://github.com/jez/calz

So for example to get the same year-long calendar view as the Compact Calendar would have, I can type

    calz 2020

calz has a couple other features too which make it nicer to use than `cal`, but those are beside the point.