this derivation will be built:
  /nix/store/56y2d7qx52jr1isip1nyl9qqqabmnfj0-nix-shell.drv
building '/nix/store/56y2d7qx52jr1isip1nyl9qqqabmnfj0-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok