I have a local/custom tree-sitter grammar. How do I use it in helix?

[marlezyx]

Pardon if I sound ever so slightly frustrated, but I've been banging my head at this for hours and the answers still seem anything but obvious. I have my own, custom, local tree-sitter generate-d directory. How do I plug it in Helix?

The manual doesn't mention the fact it's possible to set source { path = "/.../" } at all, for starters. hx --grammar can only fetch or build all of the grammars known to helix, unless restricted via a separate entry in languages.toml (not mirroring the hx --health [language] at all). If I source = { path = "/my/local/dir" } and restrict the grammar builder to only care about my language and create a ~/.config/helix/runtime/grammars directory beforehand (otherwise the C++ linker crashes at hx -g build), the thing still won't work as the hx --health mylang clearly shows it as "Tree-sitter parser: None".

So what the actual heck am I supposed to do here?

[marlezyx]

My bad. tree-sitter was built as my_lang while Helix itself was configured to expect mylang instead. After matching the names, re-generating/building the entire, and copying the queries manually into .config/helix/runtime/queries this time, everything seems to be working fine.