more fixes

Sources/PackageDSLKit/IndexCodeWriter.swift

@@ -0,0 +1,34 @@
+//
+//  IndexCodeWriter.swift
+//  PackageDSLKit
+//
+//  Created by Leo Dion.
+//  Copyright © 2025 BrightDigit.
+//
+//  Permission is hereby granted, free of charge, to any person
+//  obtaining a copy of this software and associated documentation
+//  files (the “Software”), to deal in the Software without
+//  restriction, including without limitation the rights to use,
+//  copy, modify, merge, publish, distribute, sublicense, and/or
+//  sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following
+//  conditions:
+//
+//  The above copyright notice and this permission notice shall be
+//  included in all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+//  OTHER DEALINGS IN THE SOFTWARE.
+//
+
+import SwiftSyntax
+
+public protocol IndexCodeWriter: Sendable {
+  func writeIndex(_ index: Index) throws(PackageDSLError) -> String
+}

Sources/PackageDSLKit/PackageIndexWriter.swift

@@ -29,9 +29,6 @@
 
 import SwiftSyntax
 
-public protocol IndexCodeWriter: Sendable {
-  func writeIndex(_ index: Index) throws(PackageDSLError) -> String
-}
 public struct PackageIndexWriter: IndexCodeWriter, Sendable, Hashable, Codable {
   public init() {
   }

Sources/package/FileManagerContainer.swift

@@ -32,12 +32,17 @@ import Foundation
 import PackageDSLKit
 
 internal protocol FileManagerContainer {
+  var packageFiles: PackageFilesFactory { get }
   var fileManagerType: PackageFilesInterfaceType { get }
 }
 
 extension FileManagerContainer {
+  internal var packageFiles: PackageFilesFactory {
+    PackageFiles.default
+  }
+
   internal var fileManager: PackageFilesInterface {
-    FileManager.default
+    self.packageFiles.interface(for: self.fileManagerType)
   }
 }