these 4 derivations will be built:
  /nix/store/fpq81x9hn34wgvnssla9qacda40sjvb4-system-manager.drv
  /nix/store/q729d4g6q0s9ybx1i22xxfb87kmwv3lk-closure-info.drv
  /nix/store/wam81ld7fmkfr80w6sdphb9ciddjlahi-test-script.py.drv
  /nix/store/r2d64if6v1zpi1gxb000axmb2h71907r-container-test-debian-13-existing-files.drv