add aerial

plugins/aerial/default.nix

@@ -0,0 +1,51 @@
+{ lib, pkgs, ...}:
+{
+  extra = {
+    packages = [
+      (import ./package.nix { inherit lib pkgs; })
+    ];
+
+    config = ''
+      require("aerial").setup({
+        backends = { "lsp", "treesitter", "markdown", "man" },
+        layout = { min_width = 28, placement = "edge" },
+        show_guides = true,
+        filter_kind = false,
+
+        guides = {
+          mid_item = "├ ",
+          last_item = "└ ",
+          nested_top = "│ ",
+          whitespace = "  ",
+        },
+        autojump = true,
+        keymaps = {
+          ["[y"] = "actions.prev",
+          ["]y"] = "actions.next",
+          ["[Y"] = "actions.prev_up",
+          ["]Y"] = "actions.next_up",
+          ["{"] = false,
+          ["}"] = false,
+          ["[["] = false,
+          ["]]"] = false,
+        },
+        attach_mode = "global",
+      })
+    '';
+  };
+
+  rootOpts.keymaps = [
+    {
+      mode = "n";
+      key = "<leader>lo";
+      action.__raw = ''function() require("aerial").toggle() end'';
+      options.desc = "Symbols outline";
+    }
+    {
+      mode = "n";
+      key = "<leader>fs";
+      action.__raw = ''require("telescope").extensions.aerial.aerial'';
+      options.desc = "Find symbols";
+    }
+  ];
+}