python: add type hints

python/build/quilt.py

@@ -1,9 +1,10 @@
 import subprocess
+from typing import Union
 
-def run_quilt(toolchain, cwd, patches_path, *args):
+def run_quilt(toolchain, cwd: str, patches_path: str, *args: str) -> None:
     env = dict(toolchain.env)
     env['QUILT_PATCHES'] = patches_path
     subprocess.check_call(['quilt'] + list(args), cwd=cwd, env=env)
 
-def push_all(toolchain, src_path, patches_path):
+def push_all(toolchain, src_path: str, patches_path: str) -> None:
     run_quilt(toolchain, src_path, patches_path, 'push', '-a')