these 2 derivations will be built: /nix/store/xfv6nznn89id9dhx2xmnjzd0fij648cr-flake-inputs.drv /nix/store/sh9slb1iz3ifnl60bn9ifk1f6l5haw9s-check-flake-inputs.drv building '/nix/store/xfv6nznn89id9dhx2xmnjzd0fij648cr-flake-inputs.drv' building '/nix/store/sh9slb1iz3ifnl60bn9ifk1f6l5haw9s-check-flake-inputs.drv' upload niks3: ok