"Illegal ambiguous match" error with experimental_index_url

[tbarrella]

🐞 bug report

Affected Rule

pip.parse

Is this a regression?

not sure

Description

When pip.parse with experimental_index_url uses per-platform requirements files and package versions don't match across files, it's possible (at least on OSX, for some packages) that using the package fails with "Illegal ambiguous match"

🔬 Minimal Reproduction

https://github.com/tbarrella/ambiguous

🔥 Exception or Error

Illegal ambiguous match on configurable attribute "actual" in @@rules_python++pip+pypi//debugpy:pkg:
@@rules_python++pip+pypi//_config:is_cp313_py_none_any_osx_aarch64
@@rules_python++pip+pypi//_config:is_cp313_cp313_osx_universal2
Multiple matches are not allowed unless one is unambiguously more specialized or they resolve to the same value. See https://bazel.build/reference/be/functions#select.

Illegal ambiguous match on configurable attribute "actual" in @@rules_python++pip+pypi//tornado:pkg:
@@rules_python++pip+pypi//_config:is_cp313_sdist_osx_aarch64
@@rules_python++pip+pypi//_config:is_cp313_abi3_osx_universal2
Multiple matches are not allowed unless one is unambiguously more specialized or they resolve to the same value. See https://bazel.build/reference/be/functions#select.

🌍 Your Environment

Operating System:

  
macOS, M2, 15.3.1
  

Output of bazel version:

  
Bazelisk version: 1.25.0
Build label: 8.1.1
Build target: @@//src/main/java/com/google/devtools/build/lib/bazel:BazelServer
Build time: Tue Feb 25 18:53:44 2025 (1740509624)
Build timestamp: 1740509624
Build timestamp as int: 1740509624
  

Rules_python version:

  
1.3.0
  

Anything else relevant?

• The root cause may be the same as experimental_index_url can only be used in one pip.parse(), subsequent calls fail #2648
• Workaround is to manually make the versions and hashes match when possible