these 10 derivations will be built:
  /nix/store/xhxa22byx4bpbkcd3gs4fsl1wn5zjhqp-unit-postgresql.service.drv
  /nix/store/pkp940121hbmnfv0zhdwrjlj40z48s4g-system-units.drv
  /nix/store/8kf5ydkg0dy5ddm78bwrzwk821qqpjbi-etc.drv
  /nix/store/29lxr56vj1yh0ff3njqwn4f5pd7p4w1x-activate.drv
  /nix/store/lygpvr8xb4c3fh7yr5l1jhgjhl8i7509-nixos-system-server-test.drv
  /nix/store/8g86mclkbmrb0x1n8img9iwgxiyzq3c9-closure-info.drv
  /nix/store/njlzpq14sc5pjlsynjy33iy316bxi0v7-run-nixos-vm.drv
  /nix/store/lam3ixhsvl4lkc11j3a6cr533wv5lswk-nixos-vm.drv
  /nix/store/sqp954ia6k0m3fw95pnvw8a494yz7b4a-nixos-test-driver-plv8.drv
  /nix/store/0zd92lms1wwm6fcx6jv0416164hvybmz-vm-test-run-plv8.drv