rules_go requires a cc toolchain

[jfirebaugh]

What version of rules_go are you using?

0.38.1

What version of gazelle are you using?

n/a

What version of Bazel are you using?

6.0.0

Does this issue reproduce with the latest releases of all the above?

Yes

What operating system and processor architecture are you using?

macOS ARM

Any other potentially useful information about your toolchain?

n/a

What did you do?

Minimal repro: https://github.com/jfirebaugh/rules_go_cc_toolchain

Run BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1 bazel build --@io_bazel_rules_go//go/config:pure //:main

What did you expect to see?

Builds succesfully.

What did you see instead?

ERROR: /private/var/tmp/_bazel_john/1a1601b430d3853275c40a0975b48db0/external/io_bazel_rules_go/BUILD.bazel:86:17: While resolving toolchains for target @io_bazel_rules_go//:cgo_context_data: No matching toolchains found for types @bazel_tools//tools/cpp:toolchain_type.

[fmeum]

This is being worked on in #3390, which is currently blocked on a Bazel bug I fixed in 6.1.0 (see #3390 (comment)).

Please ping this bug once Bazel 7.0 is out and we can raise the minimum version to 6.1.0, which will allow us to merge the PR.

[vihangm]

Bazel 7.0 is out! Can we get this fixed? @fmeum
Thanks!