this derivation will be built:
  /nix/store/jfk7230ph7xpckyra1l1j4hfy9rk07wy-nix-shell.drv
building '/nix/store/jfk7230ph7xpckyra1l1j4hfy9rk07wy-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok