this derivation will be built:
  /nix/store/w6x0rd7w6wy12vvxg2afdk0p3q72sbvy-nix-shell.drv
building '/nix/store/w6x0rd7w6wy12vvxg2afdk0p3q72sbvy-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok