this derivation will be built:
  /nix/store/m657cpbyag6jg37b8gm733mr4s33lkkw-nix-shell.drv
building '/nix/store/m657cpbyag6jg37b8gm733mr4s33lkkw-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok