these 3 derivations will be built:
  /nix/store/cc71w9jkswnvxp7ril0nngzxbdzhgbyn-start-postgres-server-test.drv
  /nix/store/3q88j26paj890hgfv0zy4lf1iqj4aifd-postgres-15-check-harness.drv
  /nix/store/2xsqpw8qvcbdncrddq8l2lny7pvaksmx-run-check-harness-psql-15.drv