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(define-module (oni home services utilities)
  #:use-module ((gnu services configuration)
                #:select (serialize-package
                          define-configuration))
  #:use-module ((gnu home services)
                #:select (service-type
                          service-extension
                          home-profile-service-type))
  #:use-module ((gnu home services mcron)
                #:select (home-mcron-service-type
                          home-mcron-configuration))
  #:use-module ((gnu home services shepherd)
                #:select (home-shepherd-service-type
                          shepherd-service))
  #:use-module ((guix gexp)
                #:select (gexp
                          file-append))
  #:use-module ((guix packages)
                #:select (package?))
  #:use-module ((oni packages utilities)
                #:select (inkplate-display))

  #:export (home-inkplate-display-service-type
            home-inkplate-display-configuration))

(define (serialize-boolean field value)
  "")

(define-configuration home-inkplate-display-configuration
  (package
    (package inkplate-display)
    "Package to use for updating the inkplate display.")
  (auto-start?
   (boolean #t)
   "Should the Inkplate display be updated automatically?"))

(define (add-inkplate-display-packages config)
  (list (home-inkplate-display-configuration-package config)))

(define (home-inkplate-display-shepherd-service config)
  (list
   (shepherd-service
    (documentation "Update the Inkplate display")
    (provision '(inkplate-display))
    (auto-start? (home-inkplate-display-configuration-auto-start? config))
    (one-shot? #t)
    (start
     #~(make-forkexec-constructor
        '(#$(file-append inkplate-display "/bin/inkplate-display")))))))

(define (home-inkplate-display-mcron-service config)
  (list #~(job '(next-day)
               (lambda ()
                 (system* "herd" "start" "inkplate-display"))
               ;; "herd start inkplate-display"
               "Get new email and process it via the Notmuch hook scripts.")))

(define home-inkplate-display-service-type
  (service-type
   (name 'home-inkplate-display)
   (extensions
    (list (service-extension
           home-profile-service-type
           add-inkplate-display-packages)
          (service-extension
           home-shepherd-service-type
           home-inkplate-display-shepherd-service)
          (service-extension
           home-mcron-service-type
           home-inkplate-display-mcron-service)))
   (compose identity)
   (default-value (home-inkplate-display-configuration))
   (description "Install and configure Inkplate display.")))