Only force embedded SQLite for Android

macOS and Linux keep SQLite.swift's own default trait for the
platform (system SQLite on Apple, embedded on Linux); Android is
the only target that needs the embedded copy forced, detected via
the TARGET_OS_ANDROID env var set when cross-compiling.

Author: colemancda

Package.swift

@@ -1,5 +1,21 @@
 // swift-tools-version: 6.1
 import PackageDescription
+import Foundation
+
+// Android has no system libsqlite3, so it needs SQLite.swift's embedded
+// copy. macOS and Linux keep SQLite.swift's own default for the platform.
+let isAndroid = ProcessInfo.processInfo.environment["TARGET_OS_ANDROID"] == "1"
+
+let sqliteDependency: Package.Dependency = isAndroid
+    ? .package(
+        url: "https://github.com/stephencelis/SQLite.swift.git",
+        from: "0.16.0",
+        traits: ["SQLiteSwiftCSQLite"]
+    )
+    : .package(
+        url: "https://github.com/stephencelis/SQLite.swift.git",
+        from: "0.16.0"
+    )
 
 let package = Package(
     name: "CoreModel-SQLite",
@@ -20,11 +36,7 @@ let package = Package(
             url: "https://github.com/PureSwift/CoreModel",
             from: "2.6.3"
         ),
-        .package(
-            url: "https://github.com/stephencelis/SQLite.swift.git",
-            from: "0.16.0",
-            traits: ["SQLiteSwiftCSQLite"]
-        )
+        sqliteDependency
     ],
     targets: [
         .target(