these 2 derivations will be built: /nix/store/yj07f1fzrh891ha9ph4yrgabnwjw2hkr-flake-inputs.drv /nix/store/zkg61rydd9gj650yym27l8mk6cwgklz6-check-flake-inputs.drv building '/nix/store/yj07f1fzrh891ha9ph4yrgabnwjw2hkr-flake-inputs.drv' building '/nix/store/zkg61rydd9gj650yym27l8mk6cwgklz6-check-flake-inputs.drv' upload niks3: ok