these 3 derivations will be built:
  /nix/store/h4dl1achbrg2z7p6v9aazw5lh25ppdff-clan-cli-source.drv
  /nix/store/zs5g4vdlkvss6753r5fbq138slksfc45-clan-cli.drv
  /nix/store/hx2yjzj8hic73pqdjmixfjiv6mqbw4dw-nix-shell.drv