these 3 derivations will be built:
  /nix/store/n0s9wzlwc6917sndzcr0hzh7cscqvvnf-start-postgres-server-test.drv
  /nix/store/yvqlp9w5nhhvd8zmxxxahzzckfa0yp03-postgres-15-check-harness.drv
  /nix/store/y4hyk05rwg0zh4nhiyxl47dpqcr4ay0q-run-check-harness-psql-15.drv