What version of Turborepo are you using?

1.2.5

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

npm, pnpm, Yarn v1, Yarn v2/v3 (node_modules linker only)

What operating system are you using?

Mac

Describe the Bug

turbo run build will hang if a package declares a dependency on itself in its package.json file.

Expected Behavior

turbo should display an error and exit with a non-zero exit code when it encounters invalid dependency trees.

To Reproduce

Edit one of the examples to have a package depend on itself, run turbo run build