As discussed on irc, it would be nice if anaconda were to automatically install the spice-vdagent package in virtual machines which are configured with the spice agent channel.
Anaconda can detect this by checking for the presence of a symlink named:
can you please try with 'updates=http://akozumpl.fedorapeople.org/bz742522.img' ?
It is an updates image against the current f16 (so should work with beta ISOs etc.) If it works for you I'll propose it for the master branch.
Created attachment 530992 [details]
If spice guys confirm this does what they expect it is ready to go.