this derivation will be built:
  /nix/store/inzqylzz8bf9567mdx5y81i7z0rjca7v-nix-shell.drv
building '/nix/store/inzqylzz8bf9567mdx5y81i7z0rjca7v-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok