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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2022, 2024 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu home)
#:use-module (gnu home services)
#:use-module (gnu home services symlink-manager)
#:use-module (gnu home services shells)
#:use-module (gnu home services xdg)
#:use-module (gnu home services fontutils)
#:use-module (gnu services)
#:use-module (guix records)
#:use-module (guix diagnostics)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:export (home-environment
home-environment?
this-home-environment
home-environment-derivation
home-environment-packages
home-environment-user-services
home-environment-essential-services
home-environment-services
home-environment-location
home-environment-with-provenance
home-generation-base))
;;; Comment:
;;;
;;; This module provides a <home-environment> record for managing
;;; per-user packages and configuration files in the similar way as
;;; <operating-system> do for system packages and configuration files.
;;;
;;; Code:
(define-record-type* <home-environment> home-environment
make-home-environment
home-environment?
this-home-environment
(packages home-environment-packages ; list of (PACKAGE OUTPUT...)
(default '()))
(essential-services home-environment-essential-services ; list of services
(thunked)
(default (home-environment-default-essential-services
this-home-environment)))
(services home-environment-user-services
(default '())
(sanitize validate-service-list))
(location home-environment-location ; <location>
(default (and=> (current-source-location)
source-properties->location))
(innate)))
(define (home-environment-default-essential-services he)
"Return the list of essential services for home environment."
(list
(service home-run-on-first-login-service-type)
(service home-activation-service-type)
(service home-environment-variables-service-type)
(service home-symlink-manager-service-type)
(service home-fontconfig-service-type)
(service home-xdg-base-directories-service-type)
(service home-shell-profile-service-type)
(service home-service-type)
(service home-profile-service-type (home-environment-packages he))))
(define* (home-environment-services he)
"Return all the services of home environment."
(instantiate-missing-services
(append (home-environment-user-services he)
(home-environment-essential-services he))))
(define* (home-environment-derivation he)
"Return a derivation that builds home environment."
(let* ((services (home-environment-services he))
(home (fold-services services
#:target-type home-service-type)))
(service-value home)))
(define (home-environment-configuration-file he)
"Return the configuration file of HE, based on its 'location' field, or #f
if it could not be determined."
(let ((file (and=> (home-environment-location he)
location-file)))
(and file
(or (and (string-prefix? "/" file) file)
(search-path %load-path file)))))
(define* (home-environment-with-provenance he
#:optional
(config-file
(home-environment-configuration-file
he)))
"Return a variant of HE that stores its own provenance information,
including CONFIG-FILE, if available. This is achieved by adding an instance
of HOME-PROVENANCE-SERVICE-TYPE to its services."
(home-environment
(inherit he)
(services (cons (service home-provenance-service-type config-file)
(home-environment-user-services he)))))
(define-gexp-compiler (home-environment-compiler (he <home-environment>)
system target)
((store-lift
(lambda (store)
(run-with-store store (home-environment-derivation he)
#:system system
#:target target)))))
(define %profile-generation-rx
;; Regexp that matches profile generation.
(make-regexp "(.*)-([0-9]+)-link$"))
(define (home-generation-base file)
"If FILE is a Home generation GC root such as \"guix-home-42-link\",
return its corresponding base---e.g., \"guix-home\". Otherwise return #f.
This is similar to the 'generation-profile' procedure but applied to Home
generations."
(match (regexp-exec %profile-generation-rx file)
(#f #f)
(m (let ((profile (match:substring m 1)))
;; Distinguish from a "real" profile and from a system generation.
(and (file-exists? (string-append profile "/on-first-login"))
(file-exists? (string-append profile "/profile/manifest"))
profile)))))
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