Unityhub, appimages

I’ve been trying to get Unityhub to run for a while. I asked on the Unity forums first, but got no responses.

The package is broken on nixpkgs, so I went to download it from their website on its own. This is fine as UnityHub updates pretty often and its expected that its hash will be out of date in a few days. It’s distributed as an appimage and fails to run though, even with appimage-run. It seems to give no errors, but does give the warning:

➜  Downloads appimage-run ./UnityHub.AppImage                                                                                                                                 
Fontconfig warning: "/etc/fonts/fonts.conf", line 86: unknown element "blank"
➜  Downloads appimage-run ./UnityHub.AppImage 

As you can see here, I have to force stop it. Otherwise it just hangs. Has anyone else seen this problem?

I’ve heard there are a lot of problems with regards to appimages because of FHS, but I was under the impression that appimage-run would take care of that. Do I need some special packages installed to deal with the fontconfig warning? Is that even what’s breaking here? Are there extra steps that I need to take, or do I need to start looking into running it in a docker container or something?

The warning should not really cause issues. And it has been fixed a while on NixOS, try updating to latest channel revision.