@aignas thank you for your review!

sure, i am looking into it ATM.

in the dev-guide i read that integration tests are discuraged.

in c91459a i quickly tried to add a simpler build test, however that failed in CI, presumably because bazel 7 doesnt support symbolic macros.

so do you think in this case it would be okay to add a new integration test and ignore (if possible) bazel 7 tests there?

re: testing this: Is adding target_compatible_with sufficient? Or does bazel 7 failure before it that is processed? If TCW isn't checked early enough, then how about wrapping it in a legacy macro, then checking the bazel version there, and skiping early? There's utility target in rules_testing for generating a no-op skip target for such cases; see skip_test in tests/py_runtime_pair/py_runtime_pair_tests.bzl for an example

re: losing the underscore prefix: We'll just have to live with it. We could add an infix or suffix to help denote its internal. e.g. foo_gen__ foo__gen foo_internal_gen foo_private_gen etc