guix home: Implement the 'extension-graph' and 'shepherd-graph' actions.
Until now these two actions were silently ignored. * guix/scripts/home.scm (show-help, %options): Add "--graph-backend". (%default-options): Add 'graph-backend' key. (export-extension-graph, export-shepherd-graph): New procedures. (perform-action): Add #:graph-backend parameter. Add cases for the 'extension-graph' and 'shepherd-graph' actions. (process-action): Pass #:graph-backend to 'perform-action'. * guix/scripts/system.scm (service-node-type) (shepherd-service-node-type): Export * tests/guix-home.sh: Add tests. * doc/guix.texi (Invoking guix home): Document it.
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Ludovic Courtès
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@ -38848,7 +38848,38 @@ environment. Note that not every home service that exists is supported
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$ guix home import ~/guix-config
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guix home: '/home/alice/guix-config' populated with all the Home configuration files
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@end example
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@end table
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And there's more! @command{guix home} also provides the following
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sub-commands to visualize how the services of your home environment
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relate to one another:
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@table @code
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@cindex service extension graph, of a home environment
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@item extension-graph
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Emit to standard output the @dfn{service extension graph} of the home
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environment defined in @var{file} (@pxref{Service Composition}, for more
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information on service extensions). By default the output is in
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Dot/Graphviz format, but you can choose a different format with
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@option{--graph-backend}, as with @command{guix graph} (@pxref{Invoking
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guix graph, @option{--backend}}):
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The command:
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@example
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guix home extension-graph @var{file} | xdot -
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@end example
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shows the extension relations among services.
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@cindex Shepherd dependency graph, for a home environment
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@item shepherd-graph
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Emit to standard output the @dfn{dependency graph} of shepherd services
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of the home environment defined in @var{file}. @xref{Shepherd
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Services}, for more information and for an example graph.
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Again, the default output format is Dot/Graphviz, but you can pass
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@option{--graph-backend} to select a different one.
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@end table
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@var{options} can contain any of the common build options (@pxref{Common
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@ -3,6 +3,7 @@
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;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
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;;; Copyright © 2021 Pierre Langlois <pierre.langlois@gmx.com>
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;;; Copyright © 2021 Oleg Pykhalov <go.wigust@gmail.com>
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;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -25,6 +26,9 @@
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#:use-module (gnu packages)
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#:use-module (gnu home)
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#:use-module (gnu home services)
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#:autoload (gnu home services shepherd) (home-shepherd-service-type
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home-shepherd-configuration-services
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shepherd-service-requirement)
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#:use-module (guix channels)
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#:use-module (guix derivations)
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#:use-module (guix ui)
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@ -33,13 +37,16 @@
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#:use-module (guix profiles)
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#:use-module (guix store)
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#:use-module (guix utils)
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#:autoload (guix graph) (lookup-backend export-graph)
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#:use-module (guix scripts)
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#:use-module (guix scripts package)
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#:use-module (guix scripts build)
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#:autoload (guix scripts system search) (service-type->recutils)
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#:use-module (guix scripts system reconfigure)
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#:autoload (guix scripts pull) (channel-commit-hyperlink)
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#:use-module (guix scripts home import)
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#:autoload (guix scripts system) (service-node-type
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shepherd-service-node-type)
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#:autoload (guix scripts home import) (import-manifest)
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#:use-module ((guix status) #:select (with-status-verbosity))
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#:use-module ((guix build utils) #:select (mkdir-p))
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#:use-module (guix gexp)
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@ -87,6 +94,10 @@ Some ACTIONS support additional ARGS.\n"))
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build build the home environment without installing anything\n"))
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(display (G_ "\
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import generates a home environment definition from dotfiles\n"))
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(display (G_ "\
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extension-graph emit the service extension graph\n"))
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(display (G_ "\
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shepherd-graph emit the graph of shepherd services\n"))
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(show-build-options-help)
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(display (G_ "
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@ -97,6 +108,9 @@ Some ACTIONS support additional ARGS.\n"))
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channel revisions"))
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(display (G_ "
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-v, --verbosity=LEVEL use the given verbosity LEVEL"))
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(display (G_ "
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--graph-backend=BACKEND
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use BACKEND for 'extension-graph' and 'shepherd-graph'"))
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(newline)
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(display (G_ "
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-h, --help display this help and exit"))
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@ -136,6 +150,10 @@ Some ACTIONS support additional ARGS.\n"))
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(alist-cons 'validate-reconfigure
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warn-about-backward-reconfigure
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result)))
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(option '("graph-backend") #t #f
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(lambda (opt name arg result)
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(alist-cons 'graph-backend arg result)))
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%standard-build-options))
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(define %default-options
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@ -147,18 +165,49 @@ Some ACTIONS support additional ARGS.\n"))
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(multiplexed-build-output? . #t)
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(verbosity . #f) ;default
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(debug . 0)
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(validate-reconfigure . ,ensure-forward-reconfigure)))
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(validate-reconfigure . ,ensure-forward-reconfigure)
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(graph-backend . "graphviz")))
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;;;
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;;; Actions.
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;;;
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(define* (export-extension-graph home port
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#:key (backend (lookup-backend "graphviz")))
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"Export the service extension graph of HOME to PORT using BACKEND."
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(let* ((services (home-environment-services home))
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(home (find (lambda (service)
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(eq? (service-kind service) home-service-type))
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services)))
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(export-graph (list home) port
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#:backend backend
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#:node-type (service-node-type services)
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#:reverse-edges? #t)))
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(define* (export-shepherd-graph home port
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#:key (backend (lookup-backend "graphviz")))
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"Export the graph of shepherd services of HOME to PORT using BACKEND."
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(let* ((services (home-environment-services home))
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(root (fold-services services
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#:target-type home-shepherd-service-type))
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;; Get the list of <shepherd-service>.
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(shepherds (home-shepherd-configuration-services
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(service-value root)))
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(sinks (filter (lambda (service)
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(null? (shepherd-service-requirement service)))
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shepherds)))
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(export-graph sinks port
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#:backend backend
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#:node-type (shepherd-service-node-type shepherds)
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#:reverse-edges? #t)))
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(define* (perform-action action he
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#:key
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dry-run?
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derivations-only?
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use-substitutes?
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(graph-backend "graphviz")
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(validate-reconfigure ensure-forward-reconfigure))
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"Perform ACTION for home environment. "
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@ -169,35 +218,43 @@ Some ACTIONS support additional ARGS.\n"))
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(check-forward-update validate-reconfigure
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#:current-channels (home-provenance %guix-home)))
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(mlet* %store-monad
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((he-drv (home-environment-derivation he))
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(drvs (mapm/accumulate-builds lower-object (list he-drv)))
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(% (if derivations-only?
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(return
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(for-each (compose println derivation-file-name) drvs))
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(built-derivations drvs)))
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(case action
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((extension-graph)
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(export-extension-graph he (current-output-port)
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#:backend (lookup-backend graph-backend)))
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((shepherd-graph)
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(export-shepherd-graph he (current-output-port)
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#:backend (lookup-backend graph-backend)))
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(else
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(mlet* %store-monad
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((he-drv (home-environment-derivation he))
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(drvs (mapm/accumulate-builds lower-object (list he-drv)))
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(% (if derivations-only?
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(return
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(for-each (compose println derivation-file-name) drvs))
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(built-derivations drvs)))
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(he-out-path -> (derivation->output-path he-drv)))
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(if (or dry-run? derivations-only?)
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(return #f)
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(begin
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(for-each (compose println derivation->output-path) drvs)
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(he-out-path -> (derivation->output-path he-drv)))
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(if (or dry-run? derivations-only?)
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(return #f)
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(begin
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(for-each (compose println derivation->output-path) drvs)
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(case action
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((reconfigure)
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(let* ((number (generation-number %guix-home))
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(generation (generation-file-name
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%guix-home (+ 1 number))))
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(case action
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((reconfigure)
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(let* ((number (generation-number %guix-home))
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(generation (generation-file-name
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%guix-home (+ 1 number))))
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(switch-symlinks generation he-out-path)
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(switch-symlinks %guix-home generation)
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(setenv "GUIX_NEW_HOME" he-out-path)
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(primitive-load (string-append he-out-path "/activate"))
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(setenv "GUIX_NEW_HOME" #f)
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(return he-out-path)))
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(else
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(newline)
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(return he-out-path)))))))
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(switch-symlinks generation he-out-path)
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(switch-symlinks %guix-home generation)
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(setenv "GUIX_NEW_HOME" he-out-path)
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(primitive-load (string-append he-out-path "/activate"))
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(setenv "GUIX_NEW_HOME" #f)
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(return he-out-path)))
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(else
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(newline)
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(return he-out-path)))))))))
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(define (process-action action args opts)
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"Process ACTION, a sub-command, with the arguments are listed in ARGS.
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@ -256,7 +313,9 @@ resulting from command-line parsing."
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#:derivations-only? (assoc-ref opts 'derivations-only?)
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:validate-reconfigure
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(assoc-ref opts 'validate-reconfigure))))))
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(assoc-ref opts 'validate-reconfigure)
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#:graph-backend
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(assoc-ref opts 'graph-backend))))))
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(warn-about-disk-space)))
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@ -88,7 +88,10 @@
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#:use-module (ice-9 match)
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#:use-module (rnrs bytevectors)
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#:export (guix-system
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read-operating-system))
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read-operating-system
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service-node-type
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shepherd-service-node-type))
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;;;
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@ -93,6 +93,14 @@ trap 'chmod -Rf +w "$test_directory"; rm -rf "$test_directory"' EXIT
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"# the content of bashrc-test-config.sh"))))))))
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EOF
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# Check whether the graph commands work as expected.
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guix home extension-graph "home.scm" | grep 'label = "home-activation"'
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guix home extension-graph "home.scm" | grep 'label = "home-symlink-manager"'
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guix home extension-graph "home.scm" | grep 'label = "home"'
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# There are no Shepherd services so the one below must fail.
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! guix home shepherd-graph "home.scm"
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guix home reconfigure "${test_directory}/home.scm"
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test -d "${HOME}/.guix-home"
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test -h "${HOME}/.bash_profile"
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