these 3 derivations will be built:
  /nix/store/bwd9yi7nn8g9i4nq84a09h3l03mwkz5a-start-postgres-server-test.drv
  /nix/store/3b7dg1b2ni5sfv7w080j0c251kah94yd-postgres-15-check-harness.drv
  /nix/store/a2km16pmml9zqivw2a1fxxkrf2sncnwm-run-check-harness-psql-15.drv