Properly report circular definitions of repositories

It is syntactically possible to define repositories with circular
definitions, e.g., @a might depend on a file of @b and vice versa.
These kind of circularities are discovered once the first of those
repositories is accessed (e.g., by loading a file from them). In
this case, ensure we report the cycle properly, instead of hitting
an internal error.

Improves #7871.

Change-Id: Id4227162d8c26f33e17b42242cdccafe8d02f941
PiperOrigin-RevId: 241916204
2 files changed
tree: 7941a5a5e6b099032e8859be0a37a37905d43167
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. BUILD
  12. CHANGELOG.md
  13. CODEOWNERS
  14. combine_distfiles.py
  15. combine_distfiles_to_tar.sh
  16. compile.sh
  17. CONTRIBUTING.md
  18. CONTRIBUTORS
  19. distdir.bzl
  20. ISSUE_TEMPLATE.md
  21. LICENSE
  22. README.md
  23. WORKSPACE
README.md

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