these 2 derivations will be built:
  /nix/store/fbi05ibszk2f88bbm4wb0wcp0mnjw9hp-flake-inputs.drv
  /nix/store/prc55aqk73zz860d3kj5jbsm3q6albd3-check-flake-inputs.drv
building '/nix/store/fbi05ibszk2f88bbm4wb0wcp0mnjw9hp-flake-inputs.drv'
building '/nix/store/prc55aqk73zz860d3kj5jbsm3q6albd3-check-flake-inputs.drv'

upload niks3: ok