in /etc/nixos/configuration.nix:

services.lambdabot.enable = true;

services.lambdabot.script ="

rc /var/lib/lambdabot/.lambdabot/creds.rc

irc-connect twitch irc.chat.twitch.tv 6667 IsoMorpheus Lambda_Robots:_100%_Loyal

admin + twitch:IsoMorpheus

join twitch:#freeman42x";

in /var/lib/lambdabot/.lambdabot/creds.rc:

irc-password oauth:6q9hoi2freaellmugra2e0h9yjx8ua