Discord
Install
To install discord directly in your environment without changing any configuration:
Stable:
$ nix-env -i discord --arg config '{ allowUnfree = true; }'
Testing:
$ nix-env -i discord-ptb --arg config '{ allowUnfree = true; }'
Nightly:
$ nix-env -i discord-canary --arg config '{ allowUnfree = true; }'
Usage
Command Line:
$ Discord
The nix expression also installs a desktop item as another option for starting the application.
Opening Links with Firefox
If you use Discord and it silently fails to open links in Firefox, you possibly have encountered issue #78961. This is caused by a version mismatch between the NSS libraries used by Discord and Firefox. Luckily, a relatively easy workaround is available:
First, find out which NSS version Firefox is currently using with
$ nix path-info $(which firefox) -r | grep nss-
This should print a few store paths, focus on their ends, which should look like nss-x.xx. We're interested in the one with the newest version. Next, create a new file called discord_patched.nix and paste the following code into it:
with import <nixpkgs> {};
pkgs.discord.override {
nss = pkgs.nss_3_49_2;
}
Now replace nss_3_49_2 with the previously looked up version's "attribute name", which you can look up here. Finally, build and install this patched package with
$ nix-env -i $(nix build discord_patched.nix) --arg config '{ allowUnfree = true; }'
Log in again and you should be able to open links properly.