Package does not build on ia64 and sparc

[Benjamin Mesing <ben-ml@gmx.net>]

Hello,

my package does not build on ia64 due to what seems to be dependency
problems:
        /usr/bin/sudo /usr/bin/apt-get --purge $CHROOT_OPTIONS -q -y install debhelper libapt-front-dev libqt4-dev qt4-dev-tools docbook-to-man pkg-config libmysqlclient15-dev
        Reading Package Lists...
        Building Dependency Tree...
        Some packages could not be installed. This may mean that you have
        requested an impossible situation or if you are using the unstable
        distribution that some required packages have not yet been created
        or been moved out of Incoming.
        The following information may help to resolve the situation:
        
        The following packages have unmet dependencies:
          libapt-front-dev: Depends: libtagcoll-dev (< 1.6) but 1.6.3-1 is to be installed
        E: Broken packages
        apt-get failed.
        Package installation failed
Full build log here: http://buildd.debian.org/fetch.php?&pkg=packagesearch&ver=2.1&arch=ia64&stamp=1149912912&file=log&as=raw

Whom should I contact about this? The maintainer of
libtagcoll/libapt-front-dev or the porter team, since it works fine on
every other architecture. 

It also does not build on sparc, where I was unable to determine the
reason from the build log:
http://buildd.debian.org/fetch.php?&pkg=packagesearch&ver=2.1&arch=sparc&stamp=1149339169&file=log&as=raw

Help would be appreciated.

Best regards 

Ben

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