diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 4593d793b4..f8e7436cf1 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -1841,7 +1841,7 @@ devices. WiFi devices known to work include those using Atheros chips driver, and those using Broadcom/AirForce chips (BCM43xx with Wireless-Core Revision 5), which corresponds to the @code{b43-open} Linux-libre driver. Free firmware exists for both and is available -out-of-the-box on Guix System, as part of @var{%base-firmware} +out-of-the-box on Guix System, as part of @code{%base-firmware} (@pxref{operating-system Reference, @code{firmware}}). @cindex RYF, Respects Your Freedom @@ -24745,23 +24745,23 @@ exception is the @dfn{boot service type}, which is the ultimate service. Optionally, a default value for instances of this type. @end enumerate -In this example, @var{guix-service-type} extends three services: +In this example, @code{guix-service-type} extends three services: -@table @var +@table @code @item shepherd-root-service-type -The @var{guix-shepherd-service} procedure defines how the Shepherd +The @code{guix-shepherd-service} procedure defines how the Shepherd service is extended. Namely, it returns a @code{<shepherd-service>} object that defines how @command{guix-daemon} is started and stopped (@pxref{Shepherd Services}). @item account-service-type -This extension for this service is computed by @var{guix-accounts}, +This extension for this service is computed by @code{guix-accounts}, which returns a list of @code{user-group} and @code{user-account} objects representing the build user accounts (@pxref{Invoking guix-daemon}). @item activation-service-type -Here @var{guix-activation} is a procedure that returns a gexp, which is +Here @code{guix-activation} is a procedure that returns a gexp, which is a code snippet to run at ``activation time''---e.g., when the service is booted. @end table @@ -24786,7 +24786,7 @@ value is omitted, the default value specified by (service guix-service-type) @end example -@var{guix-service-type} is quite simple because it extends other +@code{guix-service-type} is quite simple because it extends other services but is not extensible itself. @c @subsubsubsection Extensible Service Types @@ -24812,7 +24812,7 @@ The service type for an @emph{extensible} service looks like this: This is the service type for the @uref{https://wiki.gentoo.org/wiki/Project:Eudev, eudev device management daemon}. Compared to the previous example, in addition to an -extension of @var{shepherd-root-service-type}, we see two new fields: +extension of @code{shepherd-root-service-type}, we see two new fields: @table @code @item compose @@ -24839,7 +24839,7 @@ them (@pxref{Invoking guix system}). @end table There can be only one instance of an extensible service type such as -@var{udev-service-type}. If there were more, the +@code{udev-service-type}. If there were more, the @code{service-extension} specifications would be ambiguous. Still here? The next section provides a reference of the programming @@ -24913,7 +24913,7 @@ Here is an example of how a service is created and manipulated: The @code{modify-services} form provides a handy way to change the parameters of some of the services of a list such as -@var{%base-services} (@pxref{Base Services, @code{%base-services}}). It +@code{%base-services} (@pxref{Base Services, @code{%base-services}}). It evaluates to a list of services. Of course, you could always use standard list combinators such as @code{map} and @code{fold} to do that (@pxref{SRFI-1, List Library,, guile, GNU Guile Reference Manual}); @@ -25094,8 +25094,8 @@ You can actually generate such a graph for any operating system definition using the @command{guix system shepherd-graph} command (@pxref{system-shepherd-graph, @command{guix system shepherd-graph}}). -The @var{%shepherd-root-service} is a service object representing -PID@tie{}1, of type @var{shepherd-root-service-type}; it can be extended +The @code{%shepherd-root-service} is a service object representing +PID@tie{}1, of type @code{shepherd-root-service-type}; it can be extended by passing it lists of @code{<shepherd-service>} objects. @deftp {Data Type} shepherd-service @@ -25143,10 +25143,10 @@ A documentation string, as shown when running: herd doc @var{service-name} @end example -where @var{service-name} is one of the symbols in @var{provision} +where @var{service-name} is one of the symbols in @code{provision} (@pxref{Invoking herd,,, shepherd, The GNU Shepherd Manual}). -@item @code{modules} (default: @var{%default-modules}) +@item @code{modules} (default: @code{%default-modules}) This is the list of modules that must be in scope when @code{start} and @code{stop} are evaluated. @@ -25393,7 +25393,7 @@ order of magnitudes lower than a full rebuild of the dependency chain. @cindex replacements of packages, for grafts For instance, suppose a security update needs to be applied to Bash. Guix developers will provide a package definition for the ``fixed'' -Bash, say @var{bash-fixed}, in the usual way (@pxref{Defining +Bash, say @code{bash-fixed}, in the usual way (@pxref{Defining Packages}). Then, the original package definition is augmented with a @code{replacement} field pointing to the package containing the bug fix: @@ -25408,14 +25408,14 @@ Packages}). Then, the original package definition is augmented with a From there on, any package depending directly or indirectly on Bash---as reported by @command{guix gc --requisites} (@pxref{Invoking guix gc})---that is installed is automatically ``rewritten'' to refer to -@var{bash-fixed} instead of @var{bash}. This grafting process takes +@code{bash-fixed} instead of @code{bash}. This grafting process takes time proportional to the size of the package, usually less than a minute for an ``average'' package on a recent machine. Grafting is recursive: when an indirect dependency requires grafting, then grafting ``propagates'' up to the package that the user is installing. Currently, the length of the name and version of the graft and that of -the package it replaces (@var{bash-fixed} and @var{bash} in the example +the package it replaces (@code{bash-fixed} and @code{bash} in the example above) must be equal. This restriction mostly comes from the fact that grafting works by patching files, including binary files, directly. Other restrictions may apply: for instance, when adding a graft to a |