SE-0560: Build configuration conditionals for target dependencies

Hello, Swift community! The review of SE-0560: Build configuration conditionals for target dependencies begins now and runs through November 11, 2026. Reviews are an important part of the Swift evolution process. All review feedback should be either on this forum thread or, if you would like to keep your feedback private, directly to me as the review manager by email or DM. When contacting the review manager directly, please put "SE-0560" in the subject line. What goes into a review? The goal...