nix-channel

• Nixpkgs channels (repo)
• nixos: https://nixos.org/channels/nixos-22.11
• nixos-unstable: https://nixos.org/channels/nixpkgs-unstable

list

# List all channels for the current user
nix-channel --list

# List all channels for the root user
sudo nix-channel --list

add

• Add a new channel

# uses name "nixpkgs" by default
nix-channel --add "https://nixos.org/channels/nixpkgs-unstable"

# specify name manually
nix-channel --add "https://nixos.org/channels/nixos-unstable" nixos

update

• Update channels

nix-channel --update

remove

• Remove channel

nix-channel --remove nixpkgs