this derivation will be built:
  /nix/store/cy0jvl6k0mnf8cp0n558kwlvsjpsrrr8-run-check-harness-psql-15-slim.drv
these 2 paths will be fetched (23.1 KiB download, 91.6 KiB unpacked):
  /nix/store/cg4zjw3ajg7b0b46isrw8fxsdwnz635k-postgres-15-check-harness
  /nix/store/l5hvw0g89dnv45f3s2m8wchlcs6nb7s8-start-postgres-server-test