install local transformers

app.py

@@ -448,6 +448,11 @@ if not os.path.exists(repo_dir):
     import subprocess
 
     subprocess.run(["git", "clone", "https://github.com/huggingface/transformers.git", repo_dir], check=True)
+    subprocess.run(["pip", "install", "-e", repo_dir], check=True)
+else:
+    # fetch the latest changes and pull them
+    subprocess.run(["git", "fetch", "--all", "--prune"], cwd=repo_dir, check=True)
+    subprocess.run(["git", "pull", "origin", "main"], cwd=repo_dir, check=True)
 
 docs_dir = os.path.join(repo_dir, "docs", "source", "en", "model_doc")
 docs_dir = os.path.abspath(docs_dir)