NixOS systems configuration, self-hosted knot (01:28:56Z)

No compatible executor for microvm: init workflow: field `caches` was renamed to substituters (line 8).
5 | engine: microvm 6 | image: nixos 7 | > 8 | caches: 9 | https://nix-community.cachix.org: "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=" 10 | 11 | steps:
Waiting for the spindle