feat: Add command to revert Nix channel to the currently running version
Undo a channel update in the safest way possible.
Based on <https://discourse.nixos.org/t/how-to-roll-back-channel-to-currently-active -version/43161/2>.
Undo a channel update in the safest way possible.
Based on <https://discourse.nixos.org/t/how-to-roll-back-channel-to-currently-active -version/43161/2>.