return {
  require("util").setup_lang({ treesitter = { "bash" }, mason = { "shellcheck" } }),
  {
    "nvimtools/none-ls.nvim",
    opts = function(_, opts)
      local nls = require("null-ls")
      opts.sources = vim.list_extend(opts.sources or {}, {
        nls.builtins.diagnostics.shellcheck,
      })
    end,
  },
}