these 10 derivations will be built:
  /nix/store/gffk0wmw93wslaks8mkvxf3h68jqmjrp-system-units.drv
  /nix/store/q5m6nv0ig7ffgms020mapzpny9l3f94j-etc.drv
  /nix/store/65ifa987i9vgk507k4768l69bq9hyvzg-activate.drv
  /nix/store/iklp9xbl5gyqp8lcz5mdma2ndknbhjks-nixos-system-server-test.drv
  /nix/store/ghd9df3j6msm76r6r9z8693f393yaa03-nixos-system-server-test.drv
  /nix/store/l42s62wn2mxv1n9wmfb0cqbwpxbck4rg-closure-info.drv
  /nix/store/j3sr9h7vzrb8cbhvdxrf29ms0jhjfp3r-run-nixos-vm.drv
  /nix/store/chrlaz7jh9dvpc63izj365zxrh15drx3-nixos-vm.drv
  /nix/store/6bwbp87q9wnr5hyx9ih1qykighjhiy0s-nixos-test-driver-pg_repack.drv
  /nix/store/ifk2ijllspxaacd95g4in6p36p6lqq26-vm-test-run-pg_repack.drv