these 7 derivations will be built:
  /nix/store/pfxi2mxa2q8s2jxnqa7p10kfzhmlql4m-unit-postgresql-setup.service.drv
  /nix/store/h07fkz4qmzbdfkg11yibsjsw7swr30i1-system-units.drv
  /nix/store/7xrrwbqb0x5qfjvwx4z4986ylxv77h3s-etc.drv
  /nix/store/cbvjk7436a7mb8y6ncclwh5ys4nasj3b-nixos-system-server-test.drv
  /nix/store/sqvrbw11vzshay65qpvmc04klcnkl1i4-nixos-system-server-test.drv
  /nix/store/468ymv6alyyy1i5k4fs4hq77n1f2b36i-nixos-test-driver-wrappers.drv
  /nix/store/7xdkj6n5g15p3i85s6hrw6frmc1hlpic-vm-test-run-wrappers.drv
these 9 paths will be fetched (82.3 KiB download, 517.5 KiB unpacked):
  /nix/store/9wr0ibxx4qgj2wainw8y6dikm9ix87zm-activate
  /nix/store/cdsw3fj482i1q007r4n2m4k2r9rflgf1-closure-info
  /nix/store/pnf2glgj39w7hm4ngrv3syb81qw9anfi-etc
  /nix/store/1zh8fq9di5fibi62dycwdb44ggng9b24-nixos-system-server-test
  /nix/store/nz4fcypqipiav8r6pikv3al7l29csv2z-nixos-system-server-test
  /nix/store/kp547w3pdgnl67r3ps0l57c06pjqvci4-nixos-vm
  /nix/store/wk68a45cx4zi7wvhhwxx9shf8w4yrsvz-run-nixos-vm
  /nix/store/6s07maw0ymc1vsf7jan05llyd939lysk-system-units
  /nix/store/r7jj7xkwimd382ni5q6365cimiwgs4f9-unit-postgresql-setup.service