Caching

One of the wonders of nix is the power of binary caches. With binary caches, you can share binaries (and other build outputs) easily, so you never have to build software twice for the same architecture. Once you have the cache set up, nix handles the rest, so that when you build with nix, if a known cache has what you need, it's simply downloaded rather than built from scratch.

In order to use the cache that garnix provides, change your nix.conf, adding https://cache.garnix.io to substituters, and cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g= to trusted-public-keys.

Note: The current security model for private builds is based on keeping the hash of the builds private. That is to say, your builds are not protected by auth.