Search runfiles in `select_file` rule

[kpark-hrp]

select_file rule currently only searches within DefaultInfo.files.

I was wondering if we can add an argument to select_file to optionally expand the search criteria to include DefaultInfo.default_runfiles

It would look something like this.

select_file(
    name = "selected",
    srcs = ":files",
    subpath = "foo/bar.py",
    include_runfiles = True,
)

[comius]

This is an antipattern, because it's flattening a potentially large depset in order to search for a file. Skylib should not support such antipatterns or suggest people use them.

What to do instead? It's hard to suggest alternative without a specific example at hand.