nix.nvim/nvim/plugin/aerial.lua

if vim.g.did_load_aerial_plugin then
  return
end
vim.g.did_load_aerial_plugin = true

require("aerial").setup({
  -- optionally use on_attach to set keymaps when aerial has attached to a buffer
  -- on_attach = function(bufnr)
  --   -- Jump forwards/backwards with '{' and '}'
  --   vim.keymap.set("n", "{", "<cmd>AerialPrev<CR>", { buffer = bufnr })
  --   vim.keymap.set("n", "}", "<cmd>AerialNext<CR>", { buffer = bufnr })
  -- end,
})
-- You probably also want to set a keymap to toggle aerial
vim.keymap.set("n", "<leader>a", "<cmd>AerialToggle!<CR>")