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Eelco Dolstra 2020-07-31 15:43:25 +02:00
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16
doc/manual/src/package-management/channels.md
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@ -15,7 +15,9 @@ To see the list of official NixOS channels, visit
You can “subscribe” to a channel using `nix-channel --add`, e.g.,
$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
```console
$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
```
subscribes you to a channel that always contains that latest version of
the Nix Packages collection. (Subscribing really just means that the URL
@ -24,11 +26,15 @@ calls to `nix-channel
--update`.) You can “unsubscribe” using `nix-channel
--remove`:
$ nix-channel --remove nixpkgs
```console
$ nix-channel --remove nixpkgs
```
To obtain the latest Nix expressions available in a channel, do
$ nix-channel --update
```console
$ nix-channel --update
```
This downloads and unpacks the Nix expressions in every channel
(downloaded from `url/nixexprs.tar.bz2`). It also makes the union of
@ -36,7 +42,9 @@ each channel’s Nix expressions available by default to `nix-env`
operations (via the symlink `~/.nix-defexpr/channels`). Consequently,
you can then say
$ nix-env -u
```console
$ nix-env -u
```
to upgrade all packages in your profile to the latest versions available
in the subscribed channels.