[swift-evolution] [draft] Target environment platform condition

[David Sweeris]

One quick question... WRT `os()`, should that take a string instead of some keywordish thing? There's at least one OS which has a Swift port, but doesn't show up on that list (Haiku: https://www.haiku-os.org/blog/return0e/2017-08-28_gsoc_2017_porting_swift_to_haiku_-_final_report/ <https://www.haiku-os.org/blog/return0e/2017-08-28_gsoc_2017_porting_swift_to_haiku_-_final_report/>)

- Dave Sweeris

> On Oct 24, 2017, at 8:05 PM, Graydon Hoare via swift-evolution <swift-evolution at swift.org> wrote:
> 
> Hi,
> 
> I'd like to propose a variant of a very minor, additive proposal Erica Sadun posted last year, that cleans up a slightly messy idiomatic use of conditional compilation in libraries. The effects should be quite limited; I'd call it a "standard library" addition except that the repertoire of compiler-control statements isn't strictly part of the stdlib.
> 
> Proposal is here: https://gist.github.com/graydon/809af2c726cb1a27af64435e47ef4e5d <https://gist.github.com/graydon/809af2c726cb1a27af64435e47ef4e5d>
> 
> Implementation (minus fixits) is here: https://github.com/graydon/swift/commit/16493703ea297a1992ccd0fc4d2bcac7d078c982 <https://github.com/graydon/swift/commit/16493703ea297a1992ccd0fc4d2bcac7d078c982>
> 
> Feedback appreciated,
> 
> -Graydon
> 
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