I wish moving to debian was a viable option. Already got a few hundred production nodes running Angstrom, and they're only accessible via a 60ft crane.
I just found on gumstix site and angstrom package library so I'm just wgetting the entire repo as the current impact this has on me is the inability to prepare new nodes.
Since it's a 502 on feeds.angstrom I assume that eventually someone will fix it and if/when they do I will set up my own mirror.
Until then
https://downloads.gumstix.com/feeds/angstrom/ipk/glibc/armv7a/
--Chris