Check for missing GnuPG in very minimal installs

install.sh

@@ -42,7 +42,7 @@ fi
 clear
 echo
 echo "-----------------------------------------------------------------------"
-echo "                     Sympl Installer    v20210818                      "
+echo "                     Sympl Installer    v20210823                      "
 echo "-----------------------------------------------------------------------"
 echo
 echo "This script will help you install Sympl on a Debian Linux or Raspberry"
@@ -67,10 +67,19 @@ fi
 
 echo "Installing initial dependencies..."
 apt -yqq update
-if [ "x$(which debconf-set-selections)" = "x" ]; then
-  apt-get -qq -y install debconf gnupg
+
+if [ $( dpkg -l | grep -c '^ii *gnupg[ 12]' ) -eq 0 ]; then
+  apt-get -qq -y install gnupg
+  if [ $( dpkg -l | grep -c '^ii *gnupg[ 12]' ) -eq 0 ]; then
+    echo "ERROR: Unable to install GnuPG, you will need to install manually, sorry."
+    exit 1
+  fi
+fi
+
+if [ "x$(which debconf-set-selections)" = "x" ] ; then
+  apt-get -qq -y install debconf
   if [ "x$(which debconf-set-selections)" = "x" ]; then
-    echo "ERROR: Unable to set defaults, you will need to install manually, sorry."
+    echo "ERROR: Unable set defaults, you will need to install manually, sorry."
     exit 1
   fi
 fi