these 3 derivations will be built:
  /nix/store/zmxnxxm1ypaxp8x22zsp6a9m5w9xi93l-clan-cli-source.drv
  /nix/store/1yycpxdgcldcmxl1y1wb238yi40hvhxv-clan-cli.drv
  /nix/store/4qf7bblsmvnmsii77sz953vqp9gw5068-nix-shell.drv