Adventures in Mesh Networking at DEF CON with NixOS

At DEF CON 32, a few friends pushed binary caching on NixOS to its limits. Thanks to a generous hardware donation by Protectli, we managed to get a mesh network of binary cache servers running in our backpacks, with Nebula mesh VPN and 802.11s mesh WiFi running between them using TPMs for key exchange.

We see a future where trustworthy software can be built and fetched from nearly anywhere, and every device can be a node in a swarm of Nix binary caches. Follow along as we build a true edge CDN!