Upgrading NixOS with Channels

1. Clone https://github.com/NixOS/nixpkgs as ~/nixpkgs (or whatever path you prefer).

• Make sure to git pull if already cloned.

2. Inside the Git repo, checkout the latest tag git checkout <YY-MM>.

• Use to get recent tags: git tag --list '[0-9][0-9].*' --sort=creatordate | tail.

3. Rebuild NixOS with this path: nixos-rebuild switch -I nixpkgs=~/nixpkgs.