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(define-module (oni home services polybar)
  #:use-module (gnu services configuration)
  #:use-module (gnu packages wm)
  #:use-module (gnu home services)
  #:use-module (gnu home services shepherd)
  #:use-module (gnu home services utils)
  #:use-module (guix packages)
  #:use-module (guix gexp)

  #:export (home-polybar-service-type
            home-polybar-configuration))

(define-configuration home-polybar-configuration
  (package
   (package polybar)
   "Package to use for setting polybar")
  (bar
   (string "default")
   "Bar to use at startup")
  (no-serialization))

(define (add-polybar-packages config)
  (list (home-polybar-configuration-package config)))

(define (home-polybar-shepherd-service config)
  (list
   (shepherd-service
    (documentation "Start polybar")
    (provision '(polybar statusbar))
    (auto-start? #t)
    (start
     #~(make-forkexec-constructor
        (list #$(file-append (home-polybar-configuration-package config) "/bin/polybar")
              #$(home-polybar-configuration-bar config))
        #:log-file (format #f "~a/.local/var/log/polybar.log" (getenv "HOME"))))
    (stop #~(make-kill-destructor)))))

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