nix-channel manage Nix channels nix-channel --add url --remove url --list --update A Nix channel is mechanism that allows you to automatically stay up-to-date with a set of pre-built Nix expressions. A Nix channel is just a URL that points to a place that contains a set of Nix expressions, as well as a nix-push manifest. See also . This command has the following operations: --add url Adds url to the list of subscribed channels. --remove url Removes url from the list of subscribed channels. --list Prints the URLs of all subscribed channels on standard output. --update Downloads the Nix expressions of all subscribed channels, makes the conjunction of these the default for nix-env operations (by calling nix-env -I), and performs a nix-pull on the manifests of all channels to make pre-built binaries available. Note that --add and --remove do not automatically perform an update. The list of subscribed channels is stored in ~/.nix-channels. A channel consists of two elements: a bzipped Tar archive containing the Nix expressions, and a manifest created by nix-push. These must be stored under url/nixexprs.tar.bz2 and url/MANIFEST, respectively.