There will also be a hackathon going on at the GNU Project's 30th
anniversary [0] in Boston if anyone's interested in meeting in person
there. It could probably be coordinated with an online hackathon too.
Based on Libby's message [1] it might be possible to coordinate
something for Guix too.

Just a thought...

[0] https://gnu.org/gnu30/
[1]
https://lists.nongnu.org/archive/html/gnu-linux-libre/2013-08/msg00014.html