these 3 derivations will be built:
  /nix/store/k25s8ccwpz5g2jl950wccfdw2p03vl3r-clan-cli-source.drv
  /nix/store/7k90r5pqcjbpc5bjc848c9vij4a9lp9m-clan-cli.drv
  /nix/store/r7p3v108ibad7pri5ywnqiynlpv6ajlp-nix-shell.drv