this derivation will be built:
  /nix/store/c3q8960i1d30ay6dfyabhm1zdj3gb3z5-run-check-harness-psql-15.drv
these 2 paths will be fetched (23.2 KiB download, 91.9 KiB unpacked):
  /nix/store/npzq0gq4x57wpgkmpp1rxr5l18j2h11h-postgres-15-check-harness
  /nix/store/0h36pb8bg1xq6gbcm8c1mmv55d11lk42-start-postgres-server-test