Minimal Config for Janet LSP in Neovim (using Lazy.nvim + nvim-lspconfig)

init.lua

vim.g.mapleader = " "
vim.g.maplocalleader = " "

-- Lazy.nvim setup
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
	vim.fn.system({
		"git",
		"clone",
		"--filter=blob:none",
		"https://github.com/folke/lazy.nvim.git",
		"--branch=stable", -- latest stable release
		lazypath,
	})
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
	"janet-lang/janet.vim",
	{
		"neovim/nvim-lspconfig",
		lazy = false,
		config = function()
			local lspconfig = require("lspconfig")
			local configs = require("lspconfig.configs")

			if not configs.janet then
				configs.janet = {
					default_config = {
						cmd = { "janet-lsp" },
						filetypes = { "janet", "jdn" },
						root_dir = lspconfig.util.root_pattern("project.janet"),
						single_file_support = true,
						settings = {},
					},
				}
			end

			lspconfig.janet.setup({
				capabilities = vim.lsp.protocol.make_client_capabilities(),
				on_attach = function()
					-- Remove this 👇 if you don't want to be notified
					print("starting janet-lsp")
					-- Optional keymaps here 👇
					vim.keymap.set("n", "K", vim.lsp.buf.hover, { buffer = 0 })
					vim.keymap.set("n", "<leader>k", vim.lsp.buf.hover, { buffer = 0 })
					vim.keymap.set("n", "<leader>gf", vim.lsp.buf.format, {})
				end,
			})
		end,
	},
})