ERROR: the command HEAD is not available; install libwww-perl

[Martin Michlmayr <tbm@cyrius.com>]

I just got the following while building a local d-i image.  Are we
missing a build-depends?

634:tbm@ALL6500: ~/src/di/installer/build] more dest/build_orion5x_netboot.log

BUILDING IMAGE FOR build_orion5x_netboot

(set -e; \
        echo "# This file is automatically generated, edit sources.list.udeb.local instead."; \
        echo "deb copy:/home/tbm/src/di/installer/build/ localudebs/"; \
        if [ "x" != "x" ]; then \
                echo "deb  unstable main/debian-installer"; \
        else \
                gen-sources.list.udeb "/etc/apt/sources.list" unstable main/debian-installer ; \
        fi) > sources.list.udeb
ERROR: the command HEAD is not available; install libwww-perl
make[2]: *** [sources.list.udeb] Error 1
make[1]: *** [_build] Error 2
make: *** [build_orion5x_netboot] Error 2

-- 
Martin Michlmayr
http://www.cyrius.com/