these 4 derivations will be built:
  /nix/store/gxmii2q1hjb63znhamcmsrhkm6bdx7i4-clan-runtime.drv
  /nix/store/cdfir6i9c8fmpmfpr282s21zcq923gw6-clan-cli-source.drv
  /nix/store/a01b3ans1gdhd8623g5l21kfs77b8d62-clan-cli.drv
  /nix/store/m8xb5x8rfifmfxy6kl2a54msccf7dfkk-nix-shell.drv