How to distinguish files that share the same extension (e.g. GTK .ui vs Qt .ui) when matching review rules?

[ckappgit]

Hi everyone,
First of all, thank you for building and maintaining open-code-review — it's been really helpful in my workflow. I'm writing as a user who has run into a limitation, and I'd love to hear whether there's a good way to solve it.
From what I understand, review rules are currently matched purely by file name or extension — for example, a rule like *.py applies to all Python files. This works well in most cases, since most file extensions map one-to-one to a file type. However, I've hit a case where this breaks down: the .ui extension is used by both Qt and GTK . Since both match *.ui, there's no way for me to write a rule that applies to Qt UI files but not GTK ones.
I completely understand if this is out of scope or low priority — I just wanted to raise it in case others have run into the same thing. Any thoughts or pointers would be greatly appreciated. Thank you for your time and for all the work on this project!
Best regards,
ckappgit