Automate exclusion of specific Android plugin from build?

I am working on a project which makes use of several Android plugins for various purposes. The game will be deployed to several different marketplaces which have different requirements so somehow it would be useful if I could programmatically determine which plugins should be included at build time.

For instance, I would like to do the following:

• Dynamically select which Android plugins should be included.

• Dynamically select which manifest file should be used.

Here is some pseudo-code:

 public static class CustomBuildProcess {

     public enum BuildMode {
         BuildForGooglePlay,
         BuildForAmazonStore,
     }

     public static BuildMode CurrentMode { get; set; }

     private static string[] FilterAndroidPlugins(string[] pluginFolderPaths) {
         var paths = new List<string>(pluginFolderPaths);
         switch (CurrentMode) {
             case BuildMode.BuildForGooglePlay:
                 paths.Remove("Assets/Plugins/Android/Foo");
                 break;

             case BuildMode.BuildForAmazonStore:
                 paths.Remove("Assets/Plugins/Android/Bar");
                 paths.Remove("Assets/Plugins/Android/Baz");
                 break;
         }
     }

     private static string PickAndroidManifestPath() {
         switch (CurrentMode) {
             default:
                 // Just assume the standard one!
                 return "Assets/Plugins/Android/AndroidManifest.xml";

             case BuildMode.BuildForAmazonStore:
                 // Need a specific manifest file for Amazon-specific plugin.
                 return "Assets/Plugins/Android/Alt/AmazonAndroidManifest.xml";
         }
     }

 }