Merge pull request #2993 from neonichu/conditionalize-withoutEscapingSlashes

Conditionalize use of `.withoutEscapingSlashes`

Author: abertelrud

Sources/PackageLoading/ManifestLoader.swift

@@ -545,7 +545,11 @@ public final class ManifestLoader: ManifestLoaderProtocol {
 
         let encoder = JSONEncoder()
         if #available(macOS 10.15, *) {
+            #if os(macOS)
             encoder.outputFormatting = [.sortedKeys, .withoutEscapingSlashes]
+            #else // `.withoutEscapingSlashes` is not in 5.3 on non-Darwin platforms
+            encoder.outputFormatting = [.sortedKeys]
+            #endif
         }
 
         try keyHash.withData {

Sources/XCBuildSupport/PIFBuilder.swift

@@ -93,7 +93,9 @@ public final class PIFBuilder {
                 encoder.outputFormatting.insert(.sortedKeys)
             }
             if #available(macOS 10.15, *) {
+                #if os(macOS) // `.withoutEscapingSlashes` is not in 5.3 on non-Darwin platforms
                 encoder.outputFormatting.insert(.withoutEscapingSlashes)
+                #endif
             }
           #endif
         }