Add more debug output

scripts/build.py

@@ -69,9 +69,11 @@ def build_package(repo_dir, package_dir, name,
         print(os.listdir())
 
         if additional_content is not None:
+            print("applying additional content")
             os.chdir(workdir)
             print(os.listdir())
             for content in additional_content:
+                print("applying {}".format(content))
                 os.chdir(content["target_dir"])
                 print(os.listdir())
                 if "patch_dir" in content:
@@ -80,6 +82,10 @@ def build_package(repo_dir, package_dir, name,
                     apply_patches(abs_patch_dir)
                 elif "git_url" in content:
                     run_checked(["git", "clone", content["git_url"]])
+                else:
+                    print(
+                        "Unknown kind of additional content: {}".format(
+                            content))
 
 
         command = ["debchange", "--preserve"]