BCR version 1.0 has get_cpu_value from removed @bazel_tools//tools/cpp:lib_cc_configure.bzl in ghc_bindist.bzl (master fixed this via PR #2348 but never released to BCR)
JavaInfo used as native global in haskell/private/java.bzl — removed in Bazel 9
ProtoInfo used as native global in haskell/private/actions/info.bzl — removed in Bazel 9
rules_haskell_nix also still imports get_cpu_value from @bazel_tools (missed by #2348)
Reference branch: https://github.com/agentydragon/ducktape/tree/claude/evaluate-bazel-upgrade-BsVGI