That is already very easy: https://github.com/nh2/nix-binary-cache-proxy https://github.com/nh2/nix-binary-cache-proxy Allows you to set up (using NixOps!) a

That is already very easy: https://github.com/nh2/nix-binary-cache-proxy https://github.com/nh2/nix-binary-cache-proxy Allows you to set up (using NixOps!) a caching proxy for the nixos binary cache in your local network. It can also serve your own custom packages if you sign it with your own package signing key and tell your machines to trust it.