Add nvim-lazy submodule and add plugin configuration.

pkgsets/nvim/noice.nix

@@ -0,0 +1,50 @@
+{
+  lib,
+  config,
+  ...
+}:
+
+lib.mkIf (lib.elem "nvim::noice" config.machine.pkgs) {
+  programs.nvim-lazy.lazyPlugins = [
+    {
+      dir = vPlug: vPlug.noice-nvim;
+      event = [ "VeryLazy" ];
+      dependencies =
+        vPlug: with vPlug; [
+          nui-nvim
+          nvim-notify
+        ];
+      config = # lua
+        ''
+          function()
+            require("noice").setup({
+              lsp = {
+                -- override markdown rendering so that **cmp** and other plugins use **Treesitter**
+                override = {
+                  ["vim.lsp.util.convert_input_to_markdown_lines"] = true,
+                  ["vim.lsp.util.stylize_markdown"] = true,
+                  ["cmp.entry.get_documentation"] = true, -- requires hrsh7th/nvim-cmp
+                },
+              },
+              -- you can enable a preset for easier configuration
+              presets = {
+                bottom_search = true, -- use a classic bottom cmdline for search
+                -- command_palette = true, -- position the cmdline and popupmenu together
+                -- long_message_to_split = true, -- long messages will be sent to a split
+                -- inc_rename = false, -- enables an input dialog for inc-rename.nvim
+                -- lsp_doc_border = false, -- add a border to hover docs and signature help
+              },
+            })
+          end
+        '';
+    }
+    {
+      lazy = true;
+      dir = vPlug: vPlug.nvim-notify;
+    }
+    {
+      dir = vPlug: vPlug.dressing-nvim;
+      opts = { };
+    }
+  ];
+}