diff --git a/roles/iohk.nix b/roles/iohk.nix
index fe9eb5f..9f560da 100644
--- a/roles/iohk.nix
+++ b/roles/iohk.nix
@@ -32,4 +32,9 @@
 
   virtualisation.docker.enable = true;
 
+  #services.postgresql = {
+  #  enable = true;                  # Ensure postgresql is enabled
+  #  package = pkgs.postgresql_10;   # Set the required version, if needed
+  #};
+
 }
diff --git a/roles/vim.nix b/roles/vim.nix
index ffe8ac6..69d2b66 100644
--- a/roles/vim.nix
+++ b/roles/vim.nix
@@ -216,8 +216,10 @@ vim_configurable.customize {
       vim-airline-themes    # Collection of themes for airline
       vim-colorschemes      # Collection of ViM colour schemes
       vim-nix               # Support for writing Nix expressions in vim
-      vim-polyglot
+      vim-addon-nix         # Scripts assisting writing .nix files
+      vim-polyglot          # A solid language pack for Vim
       vimproc               # Interactive command execution required by ghc-mod-vim
+      #youcompleteme         # A code-completion engine for Vim - See nixpkgs issue #64048
     ];
     # manually loadable by calling `:packadd $plugin-name`
     # opt = [ phpCompletion elm-vim ];