Sorry, I don't have Linux development environment. Maybe I can try to find people to help me in roguelikes community, but it's a low priority for now.
@Tchey: The game runs fine under WINE (using "Play on Linux") in Linux. I do not know what is involved in making an AppImage right now, so I cannot say anything about that.
@underww: I might be willing to help port, if you want. Alternatively, you can host it on something like GITHUB and let the community help port it.