these 2 derivations will be built:
  /nix/store/xf7h7cm4sr1bwigba46l2il3ygla505n-flake-inputs.drv
  /nix/store/k3c8f809p0a1bs17azhjv1cybp2xgrvc-check-flake-inputs.drv
building '/nix/store/xf7h7cm4sr1bwigba46l2il3ygla505n-flake-inputs.drv'
building '/nix/store/k3c8f809p0a1bs17azhjv1cybp2xgrvc-check-flake-inputs.drv'

upload niks3: ok