these 2 derivations will be built: /nix/store/ijfjshdl3szqkjbcf6vqmzmidi1rpq4w-flake-inputs.drv /nix/store/6krdpsnmwfj1bkxcrx4yl4qcfbflwd84-check-flake-inputs.drv building '/nix/store/ijfjshdl3szqkjbcf6vqmzmidi1rpq4w-flake-inputs.drv' building '/nix/store/6krdpsnmwfj1bkxcrx4yl4qcfbflwd84-check-flake-inputs.drv' upload niks3: ok