api: packages_file_required correct case where secondary OR package…

… is already installed

if a secondary OR package is already installed and the first is not, list that as required instead of the first

api

@@ -1487,6 +1487,21 @@ packages_file_required() { #Returns which packages are required during installat
       IFS='|'
       local package
       local available="no"
+      local installed="no"
+      #first check for any already installed packages
+      #if a package is already installed, it should be used even if it is not the first option in the OR
+      for package in $word ;do
+        if package_installed "$package" ;then
+          packages+="$package "
+          installed="yes"
+          break
+        fi
+      done
+      if [ "$installed" == "yes" ]; then
+        #a package in the OR is already installed
+        continue
+      fi
+      #then check for available packages
       for package in $word ;do
         if package_available "$package" ;then
           packages+="$package "