xbps-src: make sure environment is setup before updating repositories

xbps-src

@@ -821,11 +821,13 @@ case "$XBPS_TARGET" in
         if [ -n "$CHROOT_READY" -a -z "$IN_CHROOT" ]; then
             chroot_handler bootstrap-update
         else
+            setup_env "$XBPS_CROSS_BUILD"
             chroot_sync_repodata
             update_base_chroot
         fi
         ;;
     chroot)
+        setup_env "$XBPS_CROSS_BUILD"
         chroot_sync_repodata
         chroot_handler chroot dummy
         ;;
@@ -880,6 +882,7 @@ case "$XBPS_TARGET" in
         if [ -n "$CHROOT_READY" -a -z "$IN_CHROOT" ]; then
             chroot_handler $XBPS_TARGET $XBPS_TARGET_PKG
         else
+            setup_env "$XBPS_CROSS_BUILD"
             check_existing_pkg
             chroot_sync_repodata
             # prevent update_base_chroot from removing the builddir/destdir