Testing toolchains not setup up

[thomasvl]

Not sure if this belongs on this repo or rule_apple.

https://github.com/bazelbuild/apple_support?tab=readme-ov-file#installation talks about needing to list apple_support before rules_cc for toolchain setup, but to eventually use some of the rules in rules_apple, it seems like something more is needed to get testing toolchains than what is noted here or in rules_apple. google/google-toolbox-for-mac has been working for bazel <9, but the attempt to update fails about a testing toolchain, so it seem like some additional setup is missing in some of the documentation.

[keith]

bazel_tools//tools/test:default_test_toolchain_type

This toolchain is setup by bazel or rules_cc. Separate from the CC toolchain so we won't ever need to make an apple specific one

[thomasvl]

Is there any advice that should be documented? I didn't se anything on a quick look at the cc rules.

[keith]

as a temporary workaround it looks like setting --@bazel_tools//tools/test:incompatible_use_default_test_toolchain=false works, I was wrong, this isn't a rules_cc thing at all. I need to dig more to see if this is our fault or not

[keith]

thanks for the report, turns out it was our fault, fixed in https://github.com/bazelbuild/rules_apple/releases/tag/4.5.1