these 4 derivations will be built:
  /nix/store/3nzxyijnzrbc49lgq3nwdh980218g356-clan-runtime.drv
  /nix/store/gkc5jw6m2mrab3x7fry1j17pc76k2pjk-clan-cli-source.drv
  /nix/store/5j2kh2m5iz0wygp1r7r657acaw902gxx-clan-cli.drv
  /nix/store/qc8j61x39vyacmfnpfjp4651hx988q85-nix-shell.drv