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doc: Reorder "Channels with Substitutes".

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Ordering consistency introduced by 12871cc8db.

* doc/guix.texi (Channels): Move section "Channels with Substitutes".
Update the master menu.
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zimoun 2021-03-26 08:03:18 +01:00 committed by Mathieu Othacehe
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@ -240,13 +240,13 @@ Channels
* Using a Custom Guix Channel:: Using a customized Guix. * Using a Custom Guix Channel:: Using a customized Guix.
* Replicating Guix:: Running the @emph{exact same} Guix. * Replicating Guix:: Running the @emph{exact same} Guix.
* Channel Authentication:: How Guix verifies what it fetches. * Channel Authentication:: How Guix verifies what it fetches.
* Channels with Substitutes:: Using channels with available substitutes.
* Creating a Channel:: How to write your custom channel. * Creating a Channel:: How to write your custom channel.
* Package Modules in a Sub-directory:: Specifying the channel's package modules location. * Package Modules in a Sub-directory:: Specifying the channel's package modules location.
* Declaring Channel Dependencies:: How to depend on other channels. * Declaring Channel Dependencies:: How to depend on other channels.
* Specifying Channel Authorizations:: Defining channel authors authorizations. * Specifying Channel Authorizations:: Defining channel authors authorizations.
* Primary URL:: Distinguishing mirror to original. * Primary URL:: Distinguishing mirror to original.
* Writing Channel News:: Communicating information to channel's users. * Writing Channel News:: Communicating information to channel's users.
* Channels with Substitutes:: Using channels with available substitutes.
Development Development
@ -5018,13 +5018,13 @@ updates.
* Using a Custom Guix Channel:: Using a customized Guix. * Using a Custom Guix Channel:: Using a customized Guix.
* Replicating Guix:: Running the @emph{exact same} Guix. * Replicating Guix:: Running the @emph{exact same} Guix.
* Channel Authentication:: How Guix verifies what it fetches. * Channel Authentication:: How Guix verifies what it fetches.
* Channels with Substitutes:: Using channels with available substitutes.
* Creating a Channel:: How to write your custom channel. * Creating a Channel:: How to write your custom channel.
* Package Modules in a Sub-directory:: Specifying the channel's package modules location. * Package Modules in a Sub-directory:: Specifying the channel's package modules location.
* Declaring Channel Dependencies:: How to depend on other channels. * Declaring Channel Dependencies:: How to depend on other channels.
* Specifying Channel Authorizations:: Defining channel authors authorizations. * Specifying Channel Authorizations:: Defining channel authors authorizations.
* Primary URL:: Distinguishing mirror to original. * Primary URL:: Distinguishing mirror to original.
* Writing Channel News:: Communicating information to channel's users. * Writing Channel News:: Communicating information to channel's users.
* Channels with Substitutes:: Using channels with available substitutes.
@end menu @end menu
@node Specifying Additional Channels @node Specifying Additional Channels
@ -5180,6 +5180,31 @@ introduction from a trusted source since that is the root of your trust.
If you're curious about the authentication mechanics, read on! If you're curious about the authentication mechanics, read on!
@node Channels with Substitutes
@section Channels with Substitutes
When running @command{guix pull}, Guix will first compile the
definitions of every available package. This is an expensive operation
for which substitutes (@pxref{Substitutes}) may be available. The
following snippet in @file{channels.scm} will ensure that @command{guix
pull} uses the latest commit with available substitutes for the package
definitions: this is done by querying the continuous integration
server at @url{https://ci.guix.gnu.org}.
@lisp
(use-modules (guix ci))
(list (channel-with-substitutes-available
%default-guix-channel
"https://ci.guix.gnu.org"))
@end lisp
Note that this does not mean that all the packages that you will
install after running @command{guix pull} will have available
substitutes. It only ensures that @command{guix pull} will not try to
compile package definitions. This is particularly useful when using
machines with limited resources.
@node Creating a Channel @node Creating a Channel
@section Creating a Channel @section Creating a Channel
@ -5496,31 +5521,6 @@ xgettext -o news.po -l scheme -ken etc/news.txt
To sum up, yes, you could use your channel as a blog. But beware, this To sum up, yes, you could use your channel as a blog. But beware, this
is @emph{not quite} what your users might expect. is @emph{not quite} what your users might expect.
@node Channels with Substitutes
@section Channels with Substitutes
When running @command{guix pull}, Guix will first compile the
definitions of every available package. This is an expensive operation
for which substitutes (@pxref{Substitutes}) may be available. The
following snippet in @file{channels.scm} will ensure that @command{guix
pull} uses the latest commit with available substitutes for the package
definitions: this is done by querying the continuous integration
server at @url{https://ci.guix.gnu.org}.
@lisp
(use-modules (guix ci))
(list (channel-with-substitutes-available
%default-guix-channel
"https://ci.guix.gnu.org"))
@end lisp
Note that this does not mean that all the packages that you will
install after running @command{guix pull} will have available
substitutes. It only ensures that @command{guix pull} will not try to
compile package definitions. This is particularly useful when using
machines with limited resources.
@c ********************************************************************* @c *********************************************************************
@node Development @node Development
@chapter Development @chapter Development