these 3 derivations will be built:
  /nix/store/srsg933yvyb08pc5c416nawj6qy02xrb-start-postgres-server-test.drv
  /nix/store/0wiw9x54pbw5qa1hbx9ccxrzpfkp0ahl-postgres-15-check-harness.drv
  /nix/store/ajp3693xnbrdjqh37s2vb0265jiiclmv-run-check-harness-psql-15.drv