is_windows

[ittaiz]

See if we can replace is_windows with code from skylib (existing or to contribute back).
Motivation for generalization- Recurring pattern of different paths for windows

[tian000]

I noticed that in skylib they're implementing is_windows like this:
bazelbuild/bazel#7668
https://github.com/bazelbuild/bazel-skylib/blob/5c80706f70186507a262ef756fff80b2fde743e9/rules/private/copy_file_private.bzl#L132

Should we switch our is_windows implementation to the same thing, or contribute an actual is_windows function to skylib (I am not sure which module it would go in).

[ittaiz]

I think the idea is to start the conversation with them.
The select approach seems like it’s not a replacement for our code but maybe I’m wrong.
This is why I think we should discuss it with them.