% ./wpt update-expectations --metadata metadata --manifest MANIFEST.json wptreport.json 
/Volumes/gsnedders/projects/wpt/web-platform-tests/_venv3/lib/python3.9/site-packages/urllib3/__init__.py:34: NotOpenSSLWarning: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'LibreSSL 3.3.6'. See: https://github.com/urllib3/urllib3/issues/3020
  warnings.warn(
 0:00.01 WARNING Falling back to getting metadata update properties from wptrunner browser product file, this will be removed
Traceback (most recent call last):
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/./wpt", line 10, in <module>
    wpt.main()
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wpt/wpt.py", line 233, in main
    rv = script(*args, **kwargs)
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wpt/update.py", line 44, in update_expectations
    update_properties = metadata.get_properties(properties_file=kwargs["properties_file"],
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wptrunner/wptrunner/metadata.py", line 107, in get_properties
    properties, dependents = products.load_product_update(config, product)
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wptrunner/wptrunner/products.py", line 54, in load_product_update
    module = product_module(config, product)
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wptrunner/wptrunner/products.py", line 11, in product_module
    module = importlib.import_module("wptrunner.browsers." + product)
  File "/AppleInternal/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox.py", line 14, in <module>
    import mozleak
ModuleNotFoundError: No module named 'mozleak'

(Pdb) up
> /Volumes/gsnedders/projects/wpt/web-platform-tests/tools/wpt/update.py(44)update_expectations()
-> update_properties = metadata.get_properties(properties_file=kwargs["properties_file"],
(Pdb) list
 39  	    if not kwargs["manifest_path"]:
 40  	        kwargs["manifest_path"] = os.path.join(wpt_root, "MANIFEST.json")
 41  	
 42  	    kwargs = wptcommandline.check_args_metadata_update(kwargs)
 43  	
 44  ->	    update_properties = metadata.get_properties(properties_file=kwargs["properties_file"],
 45  	                                                extra_properties=kwargs["extra_property"],
 46  	                                                config=kwargs["config"],
 47  	                                                product=kwargs["product"])
 48  	
 49  	    manifest_update(kwargs["test_paths"])
(Pdb) pp kwargs['product']
'firefox'