these 2 derivations will be built:
  /nix/store/v23l8vb30rqk941snk5q000yh7dx4a8k-claudebox.drv
  /nix/store/k66rxx2v3qpvaqcj20ypvwbknkqgk58b-check-claudebox.drv
building '/nix/store/v23l8vb30rqk941snk5q000yh7dx4a8k-claudebox.drv'
building '/nix/store/k66rxx2v3qpvaqcj20ypvwbknkqgk58b-check-claudebox.drv'

upload niks3: ok