Scripts(nvim): Check nvim existence and optionally upgrade vim-plug

dotscripts/setup/nvim

@@ -1,11 +1,20 @@
 #!/usr/bin/env bash
 
+if ! command -v nvim &> /dev/null; then
+    echo "ERROR: nvim not found"
+fi
+
 DEST=${XDG_DATA_HOME:-$HOME/.local/share}"/nvim/site/autoload/plug.vim"
 
 if ! [[ -f "$DEST" ]]; then
     echo "installing vim-plug for nvim"
     sh -c 'curl -fLo "$DEST" --create-dirs \
            https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
+    echo "installing nvim plugins"
+    nvim +PlugInstall
+else
+    echo "upgrading vim-plug"
+    nvim +PlugUpgrade
+    echo "upgrading nvim plugins"
+    nvim +PlugUpdate
 fi
-echo "installing nvim plugins"
-nvim +PlugInstall