Ok we have a ubuntu version up that should work... could you have your friend test it? Arch is like rolling the dice, but please test that also.
Not sure about any enterprise linux, like rhel or suse. and this is the first we heard of nix... so i couldn't tell you on that.
https://xandzproductionsllc.itch.io/wizardsofalamar/download/Discord-NC8dVaPcKtW...
https://xandzproductionsllc.itch.io/wizardsofalamar/download/Discord-cWPnxwZCuHq...
https://xandzproductionsllc.itch.io/wizardsofalamar/download/Discord-zMzWQEj5V69...