Addition comment above:

     # Read the file specified in $GAIA_APP_CONFIG and turn them into $GAIA_APPDIRS,
     # i.e., absolute path of each app.
     # Path ending in wildcard (*) will be expanded, non-absolute path in the list will be matched against
     # $GAIA_DISTRIBUTION_DIR and $GAIA_DIR.
     # See MDN for more information.