these 2 derivations will be built:
  /nix/store/0p56ss2sa9ssywr2dfbfzdpmh8i1x8nk-flake-inputs.drv
  /nix/store/cmygd7x4qd41wn8vrdxn52jpzafki1yh-check-flake-inputs.drv
building '/nix/store/0p56ss2sa9ssywr2dfbfzdpmh8i1x8nk-flake-inputs.drv'
building '/nix/store/cmygd7x4qd41wn8vrdxn52jpzafki1yh-check-flake-inputs.drv'

upload niks3: ok