Is this something the Trisquel project would consider doing on its own servers? I think it would be a good idea.
The Debian project now provides onion addresses for their apt repositories to
help users who want to keep their connections anonymous. They are accessed
through use of the package apt-transport-tor. Here's a page with the details:
https://onion.debian.org/ or http://5nca3wxl33tzlzj5.onion/
