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4.6 Invoking guix pull

Packages are installed or upgraded to the latest version available in the distribution currently available on your local machine. To update that distribution, along with the Guix tools, you must run guix pull: the command downloads the latest Guix source code and package descriptions, and deploys it. Source code is downloaded from a Git repository, by default the official GNU Guix repository, though this can be customized.

On completion, guix package will use packages and package versions from this just-retrieved copy of Guix. Not only that, but all the Guix commands and Scheme modules will also be taken from that latest version. New guix sub-commands added by the update also become available.

Any user can update their Guix copy using guix pull, and the effect is limited to the user who run guix pull. For instance, when user root runs guix pull, this has no effect on the version of Guix that user alice sees, and vice versa.

The result of running guix pull is a profile available under ~/.config/guix/current containing the latest Guix. Thus, make sure to add it to the beginning of your search path so that you use the latest version, and similarly for the Info manual (see Documentation):

export PATH="$HOME/.config/guix/current/bin:$PATH"
export INFOPATH="$HOME/.config/guix/current/share/info:$INFOPATH"

The --list-generations or -l option lists past generations produced by guix pull, along with details about their provenance:

$ guix pull -l
Generation 1	Jun 10 2018 00:18:18
  guix 65956ad
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: origin/master
    commit: 65956ad3526ba09e1f7a40722c96c6ef7c0936fe

Generation 2	Jun 11 2018 11:02:49
  guix e0cc7f6
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: origin/master
    commit: e0cc7f669bec22c37481dd03a7941c7d11a64f1d
  2 new packages: keepalived, libnfnetlink
  6 packages upgraded: emacs-nix-mode@2.0.4,
    guile2.0-guix@0.14.0-12.77a1aac, guix@0.14.0-12.77a1aac,
    heimdal@7.5.0, milkytracker@1.02.00, nix@2.0.4

Generation 3	Jun 13 2018 23:31:07	(current)
  guix 844cc1c
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: origin/master
    commit: 844cc1c8f394f03b404c5bb3aee086922373490c
  28 new packages: emacs-helm-ls-git, emacs-helm-mu, …
  69 packages upgraded: borg@1.1.6, cheese@3.28.0, …

See guix describe, for other ways to describe the current status of Guix.

This ~/.config/guix/current profile works like any other profile created by guix package (see Invoking guix package). That is, you can list generations, roll back to the previous generation—i.e., the previous Guix—and so on:

$ guix package -p ~/.config/guix/current --roll-back
switched from generation 3 to 2
$ guix package -p ~/.config/guix/current --delete-generations=1
deleting /var/guix/profiles/per-user/charlie/current-guix-1-link

The guix pull command is usually invoked with no arguments, but it supports the following options:

--url=url
--commit=commit
--branch=branch

Download code for the guix channel from the specified url, at the given commit (a valid Git commit ID represented as a hexadecimal string), or branch.

These options are provided for convenience, but you can also specify your configuration in the ~/.config/guix/channels.scm file or using the --channels option (see below).

--channels=file
-C file

Read the list of channels from file instead of ~/.config/guix/channels.scm. file must contain Scheme code that evaluates to a list of channel objects. See Channels, for more information.

--news
-N

Display the list of packages added or upgraded since the previous generation.

This is the same information as displayed upon guix pull completion, but without ellipses; it is also similar to the output of guix pull -l for the last generation (see below).

--list-generations[=pattern]
-l [pattern]

List all the generations of ~/.config/guix/current or, if pattern is provided, the subset of generations that match pattern. The syntax of pattern is the same as with guix package --list-generations (see Invoking guix package).

See Invoking guix describe, for a way to display information about the current generation only.

--profile=profile
-p profile

Use profile instead of ~/.config/guix/current.

--dry-run
-n

Show which channel commit(s) would be used and what would be built or substituted but do not actually do it.

--system=system
-s system

Attempt to build for system—e.g., i686-linux—instead of the system type of the build host.

--verbose

Produce verbose output, writing build logs to the standard error output.

--bootstrap

Use the bootstrap Guile to build the latest Guix. This option is only useful to Guix developers.

The channel mechanism allows you to instruct guix pull which repository and branch to pull from, as well as additional repositories containing package modules that should be deployed. See Channels, for more information.

In addition, guix pull supports all the common build options (see Common Build Options).


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