this derivation will be built:
  /nix/store/iyvjxlsc7rhsnbg5kanvim8l4i8ci54i-nix-shell.drv
building '/nix/store/iyvjxlsc7rhsnbg5kanvim8l4i8ci54i-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok