these 3 derivations will be built:
  /nix/store/msz77j6ay1n9caqq57k6abvxsawi5k0p-clan-cli-source.drv
  /nix/store/iysdqaj2i83rrchi5ijhx1fb8grb1g8a-clan-cli.drv
  /nix/store/5wsz0pmj3s0i8ahmabpm5r9afyhy7mpm-nix-shell.drv