these 14 derivations will be built:
  /nix/store/1h2jrh6vazfmq3l5iadxx0mpg15b89b7-system-units.drv
  /nix/store/7h163imjh04ap5v8jj1a6lgzw6aym78s-unit-postgresql.service.drv
  /nix/store/3s2p4hjx4vlpfpnrlqhlm4w0inx5i0jk-system-units.drv
  /nix/store/vrwh2pzgsw1fhi4ah4y9xk6k7bxj6fv5-etc.drv
  /nix/store/344mqm3m6zl00raam24g8v2jjlaym6vc-activate.drv
  /nix/store/5z63i3lc8z4vlrp22c4niy5rddik0gpv-nixos-system-server-test.drv
  /nix/store/dnwrrk9fjx5rmyh5gqjgmxm4xm69yf6v-etc.drv
  /nix/store/m913nkgxilkfiqll2bw9vl65mdmr12k9-activate.drv
  /nix/store/3nh7f8a5158c1niy93b4k4slbgk5azmq-nixos-system-server-test.drv
  /nix/store/3jl4x5smpqmxzqnvisyldh40ygwq6cp5-closure-info.drv
  /nix/store/symlrl9pyr6nyb1q4jgv2xzk9giw185y-run-nixos-vm.drv
  /nix/store/zm11nnyc2dppms4a71lnqx4pdwkd5b3n-nixos-vm.drv
  /nix/store/l44kk3m3iwb1snid0s5d7qd3x5a2hyq5-nixos-test-driver-pgroonga.drv
  /nix/store/87jprqgyzfv7ky4rp4x8bnjcsxs5sca5-vm-test-run-pgroonga.drv