[Regression] Error loading native python modules when binary is defined in another bazel module

[mering]

🐞 bug report

Affected Rule

py_binary

Is this a regression?

Yes, this worked in 1.6.3 and broke in 1.7.0. I bisected this to b8e32c4 as the first failing commit.

Description

Loading a native binary module (like abseil-py) for a py_binary defined in another module fails to find the module.

🔬 Minimal Reproduction

https://github.com/mering/reproduction_rules_python_1_7

🔥 Exception or Error

Traceback (most recent call last):
  File "/absl_app_smoke_binary.runfiles/sub+/_absl_app_smoke_binary_stage2_bootstrap.py", line 499, in 
    main()
  File "/absl_app_smoke_binary.runfiles/sub+/_absl_app_smoke_binary_stage2_bootstrap.py", line 493, in main
    _run_py_path(main_filename, args=sys.argv[1:])
  File "/absl_app_smoke_binary.runfiles/sub+/_absl_app_smoke_binary_stage2_bootstrap.py", line 287, in _run_py_path
    runpy.run_path(main_filename, run_name="__main__")
  File "", line 291, in run_path
  File "", line 98, in _run_module_code
  File "", line 88, in _run_code
  File "/absl_app_smoke_binary.runfiles/sub+/absl_app_smoke_binary.py", line 1, in 
    from absl import app
ModuleNotFoundError: No module named 'absl'

🌍 Your Environment

Operating System:

  
  Debian
  

Output of bazel version:

  
  8.5.1
  

Rules_python version:

  
  1.7.0
  

Anything else relevant?

[faximan]

cc @rickeylev @aignas as the collaborators on the breaking PR.

[aignas]

@faximan, we are indeed the main volunteer contributors working on this during our spare time.

I personally don't have time to work on this in the foreseeable future but PRs are welcome.

I'll mark this as a bug to acknowledge the issue. And Thank you Marcel for raisinig an issue with a great repro.

[faximan]

I sent a fix in #3636.