A TODO for this was introduced in #48 https://github.com/bazel-contrib/rules_ruby/pull/48/files#diff-b803fcb7f17ed9235f1e5cb1fcd2f5d3b2838429d4368ae4c57ce4436577f03fR48 Try removing the exclusion and see if there's a way to fix it.
A TODO for this was introduced in #48
https://github.com/bazel-contrib/rules_ruby/pull/48/files#diff-b803fcb7f17ed9235f1e5cb1fcd2f5d3b2838429d4368ae4c57ce4436577f03fR48
Try removing the exclusion and see if there's a way to fix it.