Move to SwiftPM fork

Author: finestructure

Package.resolved

@@ -35,7 +35,7 @@ let package = Package(
         .package(url: "https://github.com/SwiftPackageIndex/SPIManifest.git", from: "1.9.0"),
         .package(url: "https://github.com/SwiftPackageIndex/SemanticVersion.git", from: "0.3.0"),
         .package(url: "https://github.com/SwiftPackageIndex/ShellOut.git", from: "3.1.4"),
-        .package(url: "https://github.com/swiftlang/swift-package-manager.git", branch: "release/6.1"),
+        .package(url: "https://github.com/finestructure/swift-package-manager.git", branch: "release/6.1"),
         .package(url: "https://github.com/pointfreeco/swift-custom-dump.git", from: "1.0.0"),
         .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.8.0"),
         .package(url: "https://github.com/pointfreeco/swift-parsing.git", from: "0.12.0"),