these 3 derivations will be built:
  /nix/store/y8h9win72q1a2x2hdwl2yl7bywg5ip4z-clan-cli-source.drv
  /nix/store/0y3rhwnalqi9lz31n8y9iglyfsg08s03-clan-cli.drv
  /nix/store/9p8lr0kcpn175mpgvcpxvxycaf4y6dss-nix-shell.drv