this derivation will be built:
  /nix/store/4rrpmwhigm8a99lrc48anpa3w6as0xz6-nix-shell.drv
building '/nix/store/4rrpmwhigm8a99lrc48anpa3w6as0xz6-nix-shell.drv' on 'ssh-ng://nixbuild@stibnite-builder'
building '/nix/store/4rrpmwhigm8a99lrc48anpa3w6as0xz6-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok