Not sure if this is the way that they want you to send in the fixes. but this is what you can do.
You add the dll override to this file https://github.com/ValveSoftware/wine/blob/1c79a38ca494d9e32fee9fc7543b7779b184c878/loader/wine.inf.in
For example like they did with this commit https://github.com/ValveSoftware/wine/commit/4f4cf00d62e6800bc71894ce569220ccc75ca359
Nothing extracted yet.
Hello,
if i know settings for game to work in wine (e.g. game needs msxml4) how can i test it in proton?
Can i use components as in wine?
Where to contribute with game specific settings?