What version of Turborepo are you using?

1.3.1

What package manager are you using / does the bug impact?

pnpm

What operating system are you using?

Mac

Describe the Bug

Adding a root task (added in #1040) to a pipeline dependsOn often results in an error, such as:

ERROR  error preparing engine: found reference to unknown package: // in task //#generate-shared1

Sample turbo.json

Expected Behavior

I expected root task dependencies to work like other explicit package-task dependencies.

To Reproduce

https://github.com/trevorr/turborepo-root-dep-test is a minimal repository with instructions for reproducing the issue. Running the few commands in the README.md will produce the error above.