Cannot set font with qt5ct

[IQubic]

So, I've been using the kvantum support for a while, and I've not noticed any major issues with it. I'm seeing my qt5 apps styled with the proper catppuccin colours and it looks really nice!

The main thing that I've noticed is that I'm unable to specify the font used by qt5 apps. Currently, I'm seeing a default sans serif font with a small size. In the past, I've used qt5ct to set various properties about the fonts that qt5 apps use. Now that I've switched to using the nix-catppuccin module for kvantum, my qt5ct settings don't seem to be picked up.