> What's the difference between this and a nix-in-docker?
> If you run nix inside a container (e.g. nixos/nix or nixpkgs/nix-flake) then you are indeed fetching packages using the Nix store. However, each container will have its own Nix store instead of de-duplicating at the host level.
> nix-snapshotter is intended to live on the host system (sibling to containerd and/or kubelet) so that multiple containers running different images can share the underlying packages from the same Nix store.
I got the impression that it uses the node's nix daemon.
From the project readme's FAQ https://github.com/pdtpartners/nix-snapshotter#faq
> What's the difference between this and a nix-in-docker?
> If you run nix inside a container (e.g. nixos/nix or nixpkgs/nix-flake) then you are indeed fetching packages using the Nix store. However, each container will have its own Nix store instead of de-duplicating at the host level.
> nix-snapshotter is intended to live on the host system (sibling to containerd and/or kubelet) so that multiple containers running different images can share the underlying packages from the same Nix store.