Reproducible example bug for bazel-contrib/rules_python#958

Issue

entry_point rule no longer working when used with blzmod.

Using bzlmod

This repo default use blzmod. See common --enable_bzlmod in .bazelrc

It'll return error when run with the flake8 in this repo

❯ bazel build //:flake8
ERROR: /Users/xxx/projects/rules_python_bug/BUILD.bazel:3:6: no such package '@[unknown repo 'pip_flake8' requested from @]//': The repository '@[unknown repo 'pip_flake8' requested from @]' could not be resolved: No repository visible as '@pip_flake8' from main repository and referenced by '//:flake8'
ERROR: Analysis of target '//:flake8' failed; build aborted: Analysis failed
INFO: Elapsed time: 5.307s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (1 packages loaded, 0 targets configured)

Using WORKSPACE

Comment out common --enable_bzlmod in .bazelrc, and then rerun the bazel target again will succeed.

❯ bazel build //:flake8
INFO: Analyzed target //:flake8 (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
Target @pip_flake8//:rules_python_wheel_entry_point_flake8 up-to-date:
  bazel-bin/external/pip_flake8/rules_python_wheel_entry_point_flake8
INFO: Elapsed time: 0.071s, Critical Path: 0.00s
INFO: 1 process: 1 internal.
INFO: Build completed successfully, 1 total action