return {
	"nvimtools/none-ls.nvim",
	dependencies = {
		"nvimtools/none-ls-extras.nvim",
		"jayp0521/mason-null-ls.nvim", -- ensure dependencies are installed
	},
	config = function()
		local null_ls = require("null-ls")

		-- Formatters & linters for mason to install
		require("mason-null-ls").setup({
			ensure_installed = {
				"prettier", -- ts/js formatter
				"eslint_d", -- ts/js linter
				"shfmt", -- Shell formatter
				"checkmake", -- linter for Makefiles
				"stylua", -- lua formatter; Already installed via Mason
				-- 'ruff', -- Python linter and formatter; Already installed via Mason
			},
			automatic_installation = true,
		})

		local sources = {
			-- null_ls.builtins.formatting.prettier.with({ filetypes = { "html", "json", "yaml", "markdown" } }),
			null_ls.builtins.formatting.stylua,
			-- null_ls.builtins.formatting.terraform_fmt,
			null_ls.builtins.diagnostics.checkmake,
			null_ls.builtins.formatting.shfmt.with({ args = { "-i", "4" } }),
			require("none-ls.formatting.ruff").with({ extra_args = { "--extend-select", "I" } }),
			require("none-ls.formatting.ruff_format"),
			null_ls.builtins.formatting.clang_format.with({
				filetypes = { "cpp" },
			}),
		}

		require("null-ls").setup({
			sources = sources,

			on_attach = function(client, bufnr)
				if client.supports_method("textDocument/formatting") then
					vim.api.nvim_clear_autocmds({ group = augroup, buffer = bufnr })

					vim.api.nvim_create_autocmd("BufWritePre", {
						group = augroup,
						buffer = bufnr,
						callback = function()
							vim.lsp.buf.format({
								bufnr = bufnr,
								filter = function(client)
									return client.name == "null-ls"
								end,
							})
						end,
					})
				end
			end,
		})
		vim.keymap.set("n", "<leader>fo", vim.lsp.buf.format, {})
	end,
}