return {
	{
		"neovim/nvim-lspconfig",
		dependencies = {
			"hrsh7th/cmp-nvim-lsp",
		},
		config = function()
			local capabilities = require("cmp_nvim_lsp").default_capabilities()
			-- local nvim_lsp = require("lspconfig")

			-- LUA
			vim.lsp.config("lua_ls", {
				capabilities = capabilities,
				settings = {
					Lua = {
						diagnostics = {
							globals = { "vim", "describe", "it" },
						},
						hint = {
							enable = true,
						},
					},
				},
			})

			-- RUST (in rust.lua)

			-- HTML
			vim.lsp.config("html", { capabilities = capabilities })
			vim.lsp.config("cssls", {
				capabilities = capabilities,
			})

			-- JS
			vim.lsp.config("ts_ls", { capabilities = capabilities })

			-- CLANGD
			vim.lsp.config("clangd", { capabilities = capabilities })

			vim.lsp.config("ocamllsp", { capabilities = capabilities })
			vim.lsp.config("r_language_server", { capabilities = capabilities })
			--vim.lsp.enable("r_language_server")

			vim.lsp.config("metals", { capabilities = capabilities })

			local hl_groups = {
				"DiagnosticUnderlineError",
				"DiagnosticUnderlineWarn",
				"DiagnosticUnderlineInfo",
				"DiagnosticUnderlineHint",
			}
			for _, hl in ipairs(hl_groups) do
				vim.cmd.highlight(hl .. " gui=undercurl")
			end

			vim.lsp.handlers["textDocument/publishDiagnostics"] =
				vim.lsp.with(vim.lsp.diagnostic.on_publish_diagnostics, {
					virtual_text = true,
					signs = true,
					update_in_insert = false,
					show_diagnostic_autocmds = { "InsertLeave", "TextChanged" },
				})

			-- Not working for some weird reason ...
			vim.diagnostic.config({
				virtual_text = false,
				float = {
					header = false,
					border = "rounded",
					focusable = true,
				},
			})

			-- Mappings
			vim.api.nvim_create_autocmd("LspAttach", {
				group = vim.api.nvim_create_augroup("UserLspConfig", {}),
				callback = function(ev)
					local opts = { buffer = ev.buf }
					vim.keymap.set("n", "<leader>t", vim.diagnostic.open_float)
					vim.keymap.set("n", "<leader>sr", vim.lsp.buf.rename)
					vim.keymap.set("n", "<leader>gD", vim.lsp.buf.declaration, opts)
					vim.keymap.set("n", "<leader>gd", vim.lsp.buf.definition, opts)
					vim.keymap.set("n", "<leader>gi", vim.lsp.buf.implementation, opts)
					vim.keymap.set("n", "<leader>f", function()
						vim.lsp.buf.format({ async = true })
					end, opts)
					vim.keymap.set("n", "K", vim.lsp.buf.hover, opts)
				end,
			})
		end,
	},
}