diff --git a/nix/home/neovim/neovim.nix b/nix/home/neovim/neovim.nix
index 74bdf78..9c34e99 100644
--- a/nix/home/neovim/neovim.nix
+++ b/nix/home/neovim/neovim.nix
@@ -66,6 +66,29 @@
       vim.opt.shiftwidth  = 2
       vim.opt.expandtab   = true
       vim.opt.smartindent = true
+
+      -- load plugins
+      require("neo-tree").setup({
+        window = {
+          position = "left",
+          width = 36,
+        },
+      })
+      require("neo-tree.sources.manager").show("filesystem")
+
+      -- function for new line
+      _G.add_new_line = function()
+        local n_lines = vim.api.nvim_buf_line_count(0)
+        local last_nonblank = vim.fn.prevnonblank(n_lines)
+        if last_nonblank <= n_lines then vim.api.nvim_buf_set_lines(0, last_nonblank, n_lines, true, { ''' }) end
+      end
+
+      vim.cmd([[
+        augroup AddNewlineOnSave
+          autocmd!
+          autocmd BufWritePre * lua _G.add_new_line()
+        augroup END
+      ]])
     '';
 
     # auto-complete
@@ -85,7 +108,8 @@
 
     # plugins
     plugins = with pkgs.vimPlugins; [
-      vim-nix
+      neo-tree-nvim
     ];
   };
 }
+