Add an optional language feature for Library Evolution #84465
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Replace the one-off compiler flag for Library Evolution with an optional language feature. This makes the `hasFeature(LibraryEvolution)` check work in an `#if`, and is otherwise just cleanup. Tracked by rdar://161125572.
DougGregor
requested review from
bnbarham,
CodaFi,
hamishknight,
rintaro,
hborla,
slavapestov,
xedin,
artemcm,
tshortli,
QuietMisdreavus and
eeckstein
as code owners
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@swift-ci please smoke test |
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@swift-ci please smoke test |
ian-twilightcoder
approved these changes
Sep 23, 2025
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Replace the one-off compiler flag for Library Evolution with an optional language feature. This makes the
hasFeature(LibraryEvolution)check work in an#if, and is otherwise just cleanup.Tracked by rdar://161125572.