Found this issue tracker with related information: https://forums.puri.sm/t/using-non-latin-language-on-librem-... Looks like they're still far from basic feature parity with HK: they don't have key-specific popups for alternate inputs, and are unclear on how to support shift as a "true" modifier key (as HK does) without interfering with their existing UX, which is oriented towards composing text without necessarily involving the application. (This can be especially beneficial on smaller devices, where the "keyboard" can actually be a full-screen view with the only function being pure text entry.) A more PC-like layout would still provide some benefits though.