Could one create a package that invokes lilypond (an external command) and embeds the result?

Hi @AlexHarter, I have changed your post’s title to bring it in line with the question guidelines and thus make it easier to understand from the title:

Good titles are questions you would ask your friend about Typst.

Fortunately the nicely formulated question in your post made my job easy :slight_smile: Be sure to use a question for your title next time :wink: