these 4 derivations will be built:
  /nix/store/d974g8x6mjfv87gjnm3gwwals79rl6wa-system-manager.drv
  /nix/store/bzrv8nfqx0gas7d0hz2461i6rgvw190d-closure-info.drv
  /nix/store/disxvpvg6569icahy2rxkf1agam2p20a-test-script.py.drv
  /nix/store/2cgv8f3d50mfc78d5n9gynan2yjia22y-container-test-debian-13-empty-config.drv