Directly construsting the AST

[Ericson2314]

Hi, https://github.com/nixos/nix current uses lowdown for all manner of documentation purposes. For some autogenerated documentation, we currently do things in a rather ad-hoc way. It would be much nicer to instead directly construct the lowdown AST, rather than crudely pasting together strings that lowdown later parses. Is it at all ergonomic to do this today / is there any documentation on how to do this?

[Ericson2314]

OK I see most of the needed stuff is in lowdown.h and am making progress.

[Ericson2314]

My attempt to do some of this is in NixOS/nix#9732. It's currently crashing but that might be my fault.