these 3 derivations will be built:
  /nix/store/dxk1a7swjd09p6mz7ml6215fj8ciyq76-start-postgres-server-test.drv
  /nix/store/szvzbd6lfk81lxwq9030ysylm6b50rlg-postgres-15-check-harness.drv
  /nix/store/n719pp3ypqsgnyvrhkd1bh6gig3x9hc8-run-check-harness-psql-15.drv