How should nix users generate a luarc.json?

[DrTeagle]

Howdy,

I initally thought this was an issue with lx check, but realized it was due to using gen-luarc. How should one use gen-luarc in nix and lx check?

[mrcjkb]

Hey 👋

I suppose you mean mrcjkb/nix-gen-luarc-json?
You can prevent lux from updating the .luarc.json by using lx --no-luarc check.
But if you're not using lux to manage your dependencies, perhaps it's better to use emmylua-check (which is in nixpkgs-unstable). lx check uses emmlua-check as a library under the hood, but tailors the config for use with a Lux project.

[DrTeagle]

ah ok I was hesitant to manage deps with lux because of my experience with uv and binaries(numpy,scipy,etc) requiring me to add the packages to my shell anyway. I will add the deps to lux.toml. Though I dont really have a lua package(except maybe my vimtex PR) I was just trying it out.

[mrcjkb]

I do plan on implementing a nix builder for lux (equivalent to rustPlatform.buildRustPackage), which will use the lux.lock to create a fixed-output-derivation. But it's going to be a while before I get around to that.
When the project matures and if the nix builder works as intended, we might replace luarocks with lux in the nixpkgs luaPackages set.