Wiki/blog is the default if everything is being installed

install-freedombone.sh

   if grep -Fxq "install_wiki" $COMPLETION_FILE; then
       return
   fi
-  # if this is exclusively a writer setup
-  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
+  # if everything is being installed or if this is exclusively a writer setup
+  if [[ ! $SYSTEM_TYPE || $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
       WIKI_DOMAIN_NAME=$DOMAIN_NAME
       WIKI_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
   fi
   if grep -Fxq "install_blog" $COMPLETION_FILE; then
       return
   fi
-  # if this is exclusively a writer setup
-  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
+  # if everything is being installed or if this is exclusively a writer setup
+  if [[ ! $SYSTEM_TYPE || $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
       WIKI_DOMAIN_NAME=$DOMAIN_NAME
       WIKI_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
   fi