roc_ls_nvim.md

Enabling the Roc Langauge Server in Neovim

True as of 2024-05-10, using Ubuntu on WSL

When you download the Roc binary, it comes bundled with the roc_language_server. If you want to use this language server with Neovim, there's a bit of configuration that's required.

1. Download and install Roc on your system following these instructions: https://www.roc-lang.org/install
2. Make sure that the roc_language_server binary is available on your PATH.
3. Install the neovim-lspconfig plugin following their instructions. I use the Lazy plugin manager to do this. Make sure that the version you're using is up-to-date, as the Roc config was added recently.
4. Add this line to your init.lua:

   require("lspconfig").roc_ls.setup({})

5. Associate the .roc extension with the roc filetype by adding this to your init.lua:

   vim.filetype.add({ extension = { roc = "roc" } })

6. When you open a .roc file, it should now automatically start the language server. Additionally, if you have nvim-treesitter installed, it should also automatically download the Roc lang syntax the first time you open a .roc file, after associating the filetype.