these 3 derivations will be built:
  /nix/store/5xrc9rl7xzkv6qwh3gxssgiw3xy2l845-start-postgres-server-test.drv
  /nix/store/bhhqdkzc51lrps4nw8pa49lrrk8rfcp9-postgres-15-check-harness.drv
  /nix/store/xgdpbbzm1cmbd53f9abzjsxhb3l7igxy-run-check-harness-psql-15-slim.drv