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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;;
;;; 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 services shepherd)
#:use-module (gnu home services)
#:use-module (gnu packages admin)
#:use-module (gnu services shepherd)
#:use-module (guix sets)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:export (home-shepherd-service-type
home-shepherd-configuration
home-shepherd-configuration?
home-shepherd-configuration-shepherd
home-shepherd-configuration-auto-start?
home-shepherd-configuration-services)
#:re-export (shepherd-service
shepherd-service?
shepherd-service-documentation
shepherd-service-provision
shepherd-service-canonical-name
shepherd-service-requirement
shepherd-service-one-shot?
shepherd-service-respawn?
shepherd-service-start
shepherd-service-stop
shepherd-service-auto-start?
shepherd-service-modules
shepherd-action))
(define-record-type* <home-shepherd-configuration>
home-shepherd-configuration make-home-shepherd-configuration
home-shepherd-configuration?
(shepherd home-shepherd-configuration-shepherd
(default shepherd-0.9)) ; package
(auto-start? home-shepherd-configuration-auto-start?
(default #t))
(services home-shepherd-configuration-services
(default '())))
(define (home-shepherd-configuration-file services shepherd)
"Return the shepherd configuration file for SERVICES. SHEPHERD is used
as shepherd package."
(assert-valid-graph services)
(let ((files (map shepherd-service-file services))
;; TODO: Add compilation of services, it can improve start
;; time.
;; (scm->go (cute scm->go <> shepherd))
)
(define config
#~(begin
(use-modules (srfi srfi-34)
(system repl error-handling))
(apply
register-services
(map
(lambda (file) (load file))
'#$files))
(action 'root 'daemonize)
(format #t "Starting services...~%")
(let ((services-to-start
'#$(append-map shepherd-service-provision
(filter shepherd-service-auto-start?
services))))
(if (defined? 'start-in-the-background)
(start-in-the-background services-to-start)
(for-each start services-to-start)))))
(scheme-file "shepherd.conf" config)))
(define (launch-shepherd-gexp config)
(let* ((shepherd (home-shepherd-configuration-shepherd config))
(services (home-shepherd-configuration-services config)))
(if (home-shepherd-configuration-auto-start? config)
(with-imported-modules '((guix build utils))
#~(unless (file-exists?
(string-append
(or (getenv "XDG_RUNTIME_DIR")
(format #f "/run/user/~a" (getuid)))
"/shepherd/socket"))
(let ((log-dir (or (getenv "XDG_LOG_HOME")
(format #f "~a/.local/var/log"
(getenv "HOME")))))
((@ (guix build utils) mkdir-p) log-dir)
(system*
#$(file-append shepherd "/bin/shepherd")
"--logfile"
(string-append log-dir "/shepherd.log")
"--config"
#$(home-shepherd-configuration-file services shepherd)))))
#~"")))
(define (reload-configuration-gexp config)
(let* ((shepherd (home-shepherd-configuration-shepherd config))
(services (home-shepherd-configuration-services config)))
#~(system*
#$(file-append shepherd "/bin/herd")
"load" "root"
#$(home-shepherd-configuration-file services shepherd))))
(define (ensure-shepherd-gexp config)
#~(if (file-exists?
(string-append
(or (getenv "XDG_RUNTIME_DIR")
(format #f "/run/user/~a" (getuid)))
"/shepherd/socket"))
#$(reload-configuration-gexp config)
#$(launch-shepherd-gexp config)))
(define-public home-shepherd-service-type
(service-type (name 'home-shepherd)
(extensions
(list (service-extension
home-run-on-first-login-service-type
launch-shepherd-gexp)
(service-extension
home-activation-service-type
ensure-shepherd-gexp)
(service-extension
home-profile-service-type
(lambda (config)
`(,(home-shepherd-configuration-shepherd config))))))
(compose concatenate)
(extend
(lambda (config extra-services)
(home-shepherd-configuration
(inherit config)
(services
(append (home-shepherd-configuration-services config)
extra-services)))))
(default-value (home-shepherd-configuration))
(description "Configure and install userland Shepherd.")))
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