Bazel 7.0.0rc2 fails to build gomock rules

[tyler-french]

What version of rules_go are you using?

0.42.0

What version of gazelle are you using?

0.33.0

What version of Bazel are you using?

7.0.0rc2

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

Yes

What operating system and processor architecture are you using?

Linux x86 64

What did you do?

tfrench@tfrench-go ~/go-code % bazel build src/code.uber.internal/...
INFO: Writing tracer profile to '/tmp/bazel_20231031161831_yk31a'
INFO: Invocation ID: 82d08ebe-d86a-4400-bef0-52d222f9e014
ERROR: /home/user/go-code/src/.../BUILD.bazel:28:7: //src/.../arcanist:arcanist_gomock: no such attribute 'copyright_file' in 'gomock' rule

[fmeum]

In Bazel 7 it is an error to pass None values to non-existing attributes. This was silently ignored by earlier Bazel versions. I'm pretty sure that's the cause here.

[tyler-french]

Interesting. It does seem like the attributes exist here: https://github.com/bazelbuild/rules_go/blob/master/extras/gomock.bzl
So would need to probably do some further debugging.