update

I currently have a very big hook, with dozens of useStates, lots of them have empty arrays which trigger unncesary re-renders. But I don't know which is the one doing it each time wdyr logs it's output. I get:

Re-rendered because of hook changes: 
[hook useState result]
...diff

When would be very useful for me is:

Re-rendered because of hook changes:
[hook useState result] 

class DerivedMetadata(Metadata):
    def ok(self):
        print("ok")

md = DerivedMetadata.from_file("root.json")
md.ok() # fails because md type is Metadata, not DerivedMetadata

This seems to happen because the construction path goes

• DerivedMetadata.from_file()
• DerivedMetadata.from_bytes()
• JsonDeserializer.deserialize() _here deserializer doesn't know the corre

If CPM_SOURCE_CACHE is set to an empty string, CPM fails with file DOWNLOAD error: cannot create directory '/cpm' - Specify file by full.

pipupgrade --verbose (0|1|2..) for info, warning, error, etc.