software for writing documentation which enforces the invariant that all example snippets compile
has affordances to say "this snippet needs to be combined with the previous to be compiled", etc
this must exist already? but ive never seen anything like it
https://doc.rust-lang.org/rustdoc/write-documentation/documentation-tests.html I don't know about the multi-snippet bit though, seems like most people get around this by having a private doctest feature gated module that will have each snippet so you can chain them, which is ugly but does work
ok yeah this is less powerful than in my head
i feel like "actually good embedded documentation" is maybe an unsolved problem
