this derivation will be built:
  /nix/store/5gwqfhyny3whbc86vaslxzf6rvfhr5jz-nix-shell.drv
building '/nix/store/5gwqfhyny3whbc86vaslxzf6rvfhr5jz-nix-shell.drv' on 'ssh-ng://builder@build04.clan.lol'
building '/nix/store/5gwqfhyny3whbc86vaslxzf6rvfhr5jz-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok