these 2 derivations will be built:
  /nix/store/lxn1f2gxfy4rynvqcs3prlsqybfg11i5-postgres-15-check-harness.drv
  /nix/store/296rfgafbms4shhnln2bhabl95wwx0l0-run-check-harness-psql-15-slim.drv