sparc64: sparc64: Unrecognized architecture

Binary package hint: util-linux

d-i on sparc currently FTBFSes:

# Set up modules.dep, ensure there is at least one standard dir (kernel
# in this case), so depmod will use its prune list for archs with no
# modules.
set -e; \
  sysmap_name=; sysmap_opt=; if [ -n "" ]; then [ ! -e ./tmp/sparc64_netboot-2.6/tree/boot/System.map-2.6.22-12-sparc64 ] || sysmap_name="./tmp/sparc64_netboot-2.6/tree/boot/System.map-2.6.22-12-sparc64"; else [ ! -e ./tmp/sparc64_netboot-2.6/tree/boot/System.map ] || sysmap_name="./tmp/sparc64_netboot-2.6/tree/boot/System.map"; fi; [ -z "$sysmap_name" ] || sysmap_opt="-F $sysmap_name"; if [ -d ./tmp/sparc64_netboot-2.6/tree/lib/modules/2.6.22-12-sparc64 ]; then mkdir -p ./tmp/sparc64_netboot-2.6/tree/lib/modules/2.6.22-12-sparc64/kernel; sparc64 depmod $sysmap_opt -q -a -b ./tmp/sparc64_netboot-2.6/tree/ 2.6.22-12-sparc64; fi; [ -z "$sysmap_name" ] || mv $sysmap_name ./tmp/sparc64_netboot-2.6;
sparc64: sparc64: Unrecognized architecture
make[7]: *** [stamps/tree-unpack-sparc64_netboot-2.6-stamp] Error 1

Allegedly this is a bug in util-linux. Lamont, you seem to know what's going on here?