Current (20090224) rawhide .treeinfo has: [images-i386] initrd = images/pxeboot/initrd.img boot.iso = images/boot.iso kernel = images/pxeboot/vmlinuz which is normal, but the [general] section says: arch = i586 buildinstall passes --arch i586 to both mk-images and maketreeinfo.py. mk-images changes its arch to i386 (which is correct) but maketreeinfo.py was never informed of the change. This causes virt-install (and other tools) to be unable to find the images-$arch section (which must *always* be present), making it unable to install Rawhide. I think the proper fix is to pass 'i386' (i.e. basearch) to both mk-images and maketreeinfo.py. A patch been sent to anaconda-devel-list for review.
Committed and pushed your patches. This should be fixed in up the next build of anaconda. Thanks.
I was able to get to the graphical stage of anaconda with yesterday's rawhide, so I believe this is fixed.