I don’t know how the current state of more modern models is, but Kobo devices used to be quite hackable, at least about 7 years ago when I got mine. They are already running Linux under the hood, and although they come with a proprietary interface it was not hard to install koreader on my Kobo Touch.
I don’t know how the current state of more modern models is, but Kobo devices used to be quite hackable, at least about 7 years ago when I got mine. They are already running Linux under the hood, and although they come with a proprietary interface it was not hard to install koreader on my Kobo Touch.
Here the instructions: https://github.com/koreader/koreader/wiki/Installation-on-Kobo-devices