these 3 derivations will be built:
  /nix/store/yh6g6hnss3vg4n63j4kgvx2rd6d7lz41-start-postgres-server-test.drv
  /nix/store/zy1x1ssps25cmsm1gpzdjw9b3xwnd6rm-postgres-15-check-harness.drv
  /nix/store/1h97lk492c5zwgz6p6xw0wlbdmr9lbz2-run-check-harness-psql-15.drv