A slight tangent: I discovered the Zephyr ASDL (Abstract Syntax Description Language) by looking at the oilshell blog: https://www.oilshell.org/blog/tags.html?t

A slight tangent: I discovered the Zephyr ASDL (Abstract Syntax Description Language) by looking at the oilshell blog: https://www.oilshell.org/blog/tags.html?tag=ASDL#ASDL https://www.oilshell.org/blog/tags.html?tag=ASDL#ASDL There are interesting posts about the ADSL, as well as about implementing interpreters in that blog. Definitely piqued my interest as someone passionate about language design.