From 84cea56d2473e9519bdb794f1dc658592b4e8d95 Mon Sep 17 00:00:00 2001
From: Luke Howard <lukeh@padl.com>
Date: Tue, 9 Jun 2026 12:24:56 +1000
Subject: [PATCH] trim imports for non-Darwin builds

don't import Foundation if FoundationEssentials available;
conditionally and explicitly import Dispatch
---
 Sources/AsyncQueue/CancellableQueue.swift | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Sources/AsyncQueue/CancellableQueue.swift b/Sources/AsyncQueue/CancellableQueue.swift
index dd543d8..05e9bca 100644
--- a/Sources/AsyncQueue/CancellableQueue.swift
+++ b/Sources/AsyncQueue/CancellableQueue.swift
@@ -20,7 +20,14 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
-import Foundation
+#if canImport(FoundationEssentials)
+	import FoundationEssentials
+#else
+	import Foundation
+#endif
+#if canImport(Dispatch)
+	import Dispatch
+#endif
 
 /// A queue wrapper that enables cancelling all currently executing and pending tasks.
 ///
@@ -398,7 +405,7 @@ private final class Lock<State>: @unchecked Sendable {
 
 	// MARK: Fileprivate
 
-	fileprivate func withLock<R>(_ body: @Sendable (inout State) throws -> R) rethrows -> R where R: Sendable {
+	fileprivate func withLock<R: Sendable>(_ body: @Sendable (inout State) throws -> R) rethrows -> R {
 		try lockQueue.sync {
 			try body(&unsafeValue)
 		}