This was already suggested, but it was closed before I had the chance to reply.
I wanted to say that I am currently working to add cheat support to the GTK interface, in other words, Linux users will finally be able to use codes. Currently, I am working on getting the graphical interface to work right.
However, please note that I am not a passionate C++ developer, thus progess will be very slow. Also expect the support to be basic, i.e. searching for cheats is not a priority now. If somebody has a good reason why I should not do this or someone with a bit more experience wants to pick this up, please let me know.