these 2 derivations will be built: /nix/store/061yc88pnrqgzxgg9ml4a47gs12200is-flake-inputs.drv /nix/store/qj1n6lfa63qr48ajak3p5vwrhp7igp7v-check-flake-inputs.drv building '/nix/store/061yc88pnrqgzxgg9ml4a47gs12200is-flake-inputs.drv' building '/nix/store/qj1n6lfa63qr48ajak3p5vwrhp7igp7v-check-flake-inputs.drv' upload niks3: ok