non-nixos configs.

terminal/nvim/treesitter/arial.nix

@@ -0,0 +1,28 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  config =
+    lib.mkIf config.host.nvim.enable-treesitter
+    {
+      programs.nixvim = {
+        keymaps = [
+          {
+            action = ":AerialToggle!<CR>";
+            key = "<leader>o";
+            mode = "n";
+            options = {
+              silent = true;
+              desc = "toggle outline";
+            };
+          }
+        ];
+        extraPlugins = with pkgs.vimPlugins; [
+          aerial-nvim
+        ];
+        extraConfigLua = ''require("aerial").setup({})'';
+      };
+    };
+}

terminal/nvim/treesitter/rainbow-delimiters.nix

@@ -0,0 +1,25 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  config =
+    lib.mkIf config.host.nvim.enable-treesitter
+    {
+      programs.nixvim = {
+        plugins.rainbow-delimiters = {
+          enable = true;
+          highlight = [
+            "RainbowDelimiterYellow"
+            "RainbowDelimiterBlue"
+            "RainbowDelimiterOrange"
+            "RainbowDelimiterGreen"
+            "RainbowDelimiterViolet"
+            "RainbowDelimiterCyan"
+            # "RainbowDelimiterRed"
+          ];
+        };
+      };
+    };
+}

terminal/nvim/treesitter/treesitter.nix

@@ -0,0 +1,39 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  options = {
+    host.nvim.enable-treesitter = lib.mkOption {
+      default = false;
+      type = lib.types.bool;
+      description = ''
+        enable nvim treesitter
+      '';
+    };
+  };
+  config =
+    lib.mkIf config.host.nvim.enable-treesitter
+    {
+      host.nvim.enable-completions = true;
+      programs.nixvim = {
+        plugins.treesitter = {
+          enable = true;
+          folding = true;
+          indent = true;
+          nixvimInjections = true;
+        };
+        plugins.treesitter-context.enable = true;
+        plugins.indent-blankline.enable = true;
+        extraPlugins = with pkgs.vimPlugins; [
+          treesj
+        ];
+        extraConfigLua = ''require("treesj").setup({})'';
+      };
+    };
+  imports = [
+    ./rainbow-delimiters.nix
+    ./arial.nix
+  ];
+}