this derivation will be built:
  /nix/store/a4ci1c2nlymh96g84cv3hwk4bh0jrf40-nix-shell.drv
this path will be fetched (0.0 KiB download, 32.4 MiB unpacked):
  /nix/store/ljqmlka2ix5imaip3z43hp54dmbl3dqf-skopeo-1.24.1
building '/nix/store/a4ci1c2nlymh96g84cv3hwk4bh0jrf40-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok