Problems installing Iceweasel Aurora on Wheezy

[Tim Allen]

This weekend I installed a shiny new Debian machine with the Wheezy
Alpha 1 installer, and now I'm working on migrating my data across from
my old Ubuntu machine. Previously, I'd just downloaded the x86_64
tarball from mozilla.org and allowed it to update itself whenever it
liked, but since Debian has a semi-official repository for up-to-date
Iceweasel builds, I figured I'd give it a try.

Following the instructions on http://mozilla.debian.net/, I created
/etc/apt/sources.list.d/iceweasel-aurora.list containing:

    deb http://mozilla.debian.net/ experimental iceweasel-aurora

I then ran "apt-get update" and "apt-get install -t experimental
iceweasel", and got the following output:

    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    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:
     iceweasel : Depends: xulrunner-16.0 (>= 16.0~a2+20120720042008-1)
     but it is not going to be installed
     E: Unable to correct problems, you have held broken packages.

Since this is a fresh installation, I'm pretty sure I haven't held any
packages at all. Looking at "apt-cache policy xulrunner-16.0", I can't
see any obvious reason why apt-get would detest it so:

    xulrunner-16.0:
      Installed: (none)
      Candidate: 16.0~a2+20120720042008-1
      Version table:
	 16.0~a2+20120720042008-1 0
	    500 http://mozilla.debian.net/ experimental/iceweasel-aurora amd64 Packages

I have tinkered with pinning, but since apt-cache policy already gives
mozilla.debian.net packages 500 points, it doesn't seem like it would be
useful.