Declare Swift 6 language mode and document minimum requirements - #18
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Native source already compiles clean under Swift 6 strict concurrency (previous commit fixed it) — this makes the mode official instead of approximating it with Swift 5 + -strict-concurrency=complete. - podspec: swift_version 5.0 -> 6.0, drop the now-subsumed -strict-concurrency=complete flag (kept -warnings-as-errors) - Package.swift: swift-tools-version 5.9 -> 6.0, defaults SwiftPM consumers to language mode v6 - README: document minimum requirements (iOS 17, macOS 14, Flutter 3.41/Dart 3.10, Xcode 16+) as a table Cost to users is zero: the package's iOS 17/macOS 14 floor and Flutter's own Xcode 16+ requirement mean every consumer already has a Swift 6 toolchain. Verified: example iOS simulator + macOS builds green with SWIFT_VERSION = 6.0 resolved in the pod xcconfig (Xcode 26.6). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
CI's Xcode 16 SDK doesn't yet mark MKLookAroundScene and MKMapSnapshotter.Snapshot as Sendable, so under Swift 6 language mode awaiting request.scene / snapshotter.start() from @mainactor code fails there (newer SDKs annotate these and compile fine, which is why local Xcode 26.6 passed). Portable fix: each await moves into a nonisolated static helper that takes only Sendable value types (coordinate; region/size/scale/flags) and returns the result as `sending` — the request/snapshotter live entirely in a disconnected region, so region isolation proves the transfer safe on both SDK generations. Snapshot options are now built twice by design: caller-side only for size/mapRect used by the compositing pass, helper-side for the actual snapshotter. displayScale ==0 sentinel means "leave scale unset" (MapKit main-screen default), used by the macOS path. Verified: example iOS simulator + macOS builds green locally (Xcode 26.6); CI Xcode 16 is the gate this targets. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
Declares Swift 6 language mode officially, replacing the Swift 5 +
-strict-concurrency=completeapproximation. The source already compiles clean under it (#17 fixed the violations); this flips the manifests and documents the minimums.Changes
darwin/mapkit_flutter.podspec—swift_version5.0 → 6.0; dropped-strict-concurrency=complete(subsumed by the language mode), kept-warnings-as-errors.darwin/mapkit_flutter/Package.swift—swift-tools-version5.9 → 6.0, defaulting SwiftPM consumers to language mode v6.README.md— minimum requirements as a table: iOS 17, macOS 14, Flutter 3.41 / Dart 3.10, Xcode 16+.Cost to users is zero: the iOS 17 / macOS 14 floor plus Flutter's own Xcode 16+ requirement mean every consumer already has a Swift 6 toolchain. In exchange, data-race safety in the plugin is compiler-enforced rather than flag-approximated.
Test plan
SWIFT_VERSION = 6.0resolved in the pod xcconfig (Xcode 26.6, local)macos-15runner ships Xcode 16)🤖 Generated with Claude Code