Update rules_swift to use the toolchain transition.

This is phase 2 of of the switch to toolchain transitions. See bazelbuild/bazel#11584 for details. This shouldn't be merged into rules_swift's master branch until https://cs.opensource.google/bazel/bazel/+/58fdf63d81cc71f0315918b111fc56f4c039f1a5 is in a Bazel release (which should be 3.7, bazelbuild/bazel#12188). PiperOrigin-RevId: 334610489
bazelbuild · Sep 30, 2020 · 9b9a097 · 9b9a097 · keith · Sep 30, 2020
1 parent 639ecfa
commit 9b9a097
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diff --git a/swift/internal/swift_toolchain.bzl b/swift/internal/swift_toolchain.bzl
@@ -274,5 +274,6 @@ for incremental compilation using a persistent mode.
     doc = "Represents a Swift compiler toolchain.",
     fragments = ["swift"],
     toolchains = ["@bazel_tools//tools/cpp:toolchain_type"],
+    incompatible_use_toolchain_transition = True,
     implementation = _swift_toolchain_impl,
 )
diff --git a/swift/internal/xcode_swift_toolchain.bzl b/swift/internal/xcode_swift_toolchain.bzl
@@ -691,5 +691,6 @@ for incremental compilation using a persistent mode.
         "swift",
     ],
     toolchains = ["@bazel_tools//tools/cpp:toolchain_type"],
+    incompatible_use_toolchain_transition = True,
     implementation = _xcode_swift_toolchain_impl,
 )