these 3 derivations will be built:
  /nix/store/6navcgainpanbgniq555gldgivpqp36j-bb-app-src-with-lock.drv
  /nix/store/wkj9gfa7766xj5yxg222m9xgb8gn19y8-bb-app-0.47.1.drv
  /nix/store/wa1kykvpa4pnlhawb1lg47pxwvd3zmga-check-bb-app.drv