these 2 derivations will be built: /nix/store/5z6cybprdpxspr433ha841x8g4bs7djy-flake-inputs.drv /nix/store/dh6a52hk58zh51xcjlhy0izlhbanb4zd-check-flake-inputs.drv building '/nix/store/5z6cybprdpxspr433ha841x8g4bs7djy-flake-inputs.drv' building '/nix/store/dh6a52hk58zh51xcjlhy0izlhbanb4zd-check-flake-inputs.drv' upload niks3: ok