Here (https://discordapp.com/api/download?platform=linux&format=tar.gz) is the link for the linux discord client. This is not the same as the canary version in the software center. This a 3rd party application and I believe is closed source.
The current canary version that is available on the 3rd party packages site doesn't work anymore. It forces you to download 0.0.14 (tar.gz or dev) to continue.
Edit: it appears that the official release tar.gz download runs without issues in Solus.