Description of the problem / feature request:

While updating rules_apple we couldn't use @rpath arguments as it would result in a build failure. Instead we had to pass the arguments in a different way:

https://github.com/bazelbuild/rules_apple/pull/1207/files#diff-d84498974951b9a579baeeaf19d52ffb0a42a15b520c4359dac92448e2b806ceR670

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

This code needs to be updated to support arguments that start with @rpath:

What operating system are you running Bazel on?

macOS 11.6.1

What's the output of bazel info release?

5.0.0rc2