I'm experimenting with combining a PEG-style parser with compiling the rules for a grammar right in, i.e. once compiled there's just a parser, no need for locating parse tables first.
This means that at compile time, the parser crate needs to be able to parse the grammar, which I want to write in an EBNF-style language.
At this point it starts looking like a bootstrap problem, one solution for which is to use previous version of the project in question. Of course that doesn't help me with the initial version, but that can be relatively quick-and-dirty as long as it gets the job done.
Ultimately I want this to be maintainable too, especially if the experiment pans out.