Update init/eessi_environment_variables

Co-authored-by: Kenneth Hoste <[email protected]>

Author: hmeiland

init/eessi_environment_variables

@@ -25,7 +25,7 @@ if [ -d $EESSI_PREFIX ]; then
   if [ -d $EESSI_EPREFIX ]; then
 
     # determine subdirectory in software layer
-    if [ -z $EESSI_USE_ARCHDETECT ]; then
+    if [ "$EESSI_USE_ARCHDETECT" == "1" ]; then
       # if archdetect is enabled, use internal code
       export EESSI_SOFTWARE_SUBDIR=$(${EESSI_INIT_DIR_PATH}/eessi_archdetect.sh cpupath)
       echo "archdetect says ${EESSI_SOFTWARE_SUBDIR}" >> $output