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(use-modules (ice-9 match))
(define-syntax-rule (forever body ...)
(while #t body ...))
(define-syntax-rule (with-fork body ...)
(match (primitive-fork)
(0 (begin body ...))
(pid pid)))
(define (touch-file file)
(close-port (open-file file "a0b")))
(define (run-command command)
(zero? (status:exit-val (apply system* command))))
(define (make-system-constructor command)
(lambda _
(run-command command)))
(define (make-system-destructor command)
(lambda _
(not (run-command command))))
(define (simple-service program)
(make <service>
#:provides (list (string->symbol program))
#:requires '()
#:start (make-forkexec-constructor (list program))
#:stop (make-kill-destructor)))
(define %home (getenv "HOME"))
(register-services
;; Emacs
(make <service>
#:provides '(emacs)
#:requires '()
#:start (make-system-constructor '("emacs" "--daemon"))
#:stop (make-system-destructor '("emacsclient" "--eval" "(kill-emacs)")))
;; Customize X key bindings.
(make <service>
#:provides '(xmodmap)
#:requires '()
#:start (make-forkexec-constructor
(list "xmodmap" (string-append %home "/.xmodmap"))))
;; GPG/SSH agent.
(make <service>
#:provides '(gpg-agent)
#:requires '()
#:start (make-system-constructor
(list "gpg-agent" "--daemon" "--enable-ssh-support"
"--pinentry-program"
(string-append %home "/.guix-profile/bin/pinentry-gtk-2")))
#:stop (make-system-destructor
'("gpg-connect-agent" "killagent" "/bye")))
;; Mailbox sync.
(make <service>
#:provides '(offlineimap)
#:requires '()
#:start (lambda args
(with-fork
;; OfflineIMAP's "autorefresh" mode consistently
;; consumes all of the RAM on my machine, so let's just
;; run it in a loop instead.
(forever
(system* "offlineimap")
(sleep 20))))
#:stop (make-kill-destructor))
;; FUSE
(make <service>
#:provides '(sshfs)
#:requires '()
#:start (make-forkexec-constructor
(list "sshfs" "aigis:Music" (string-append %home "/Music"))))
;; Music.
(make <service>
#:provides '(mpd)
#:requires '()
#:start (lambda args
(define (scope file)
(string-append %home "/.config/mpd/" file))
(unless (file-exists? (scope "playlists"))
(mkdir (scope "playlists")))
(touch-file (scope "database"))
(fork+exec-command
(list "mpd" (scope "mpd.conf")))))
(simple-service "mpdscribble"))
;; Send dmd into the background
(action 'dmd 'daemonize)
;; Services to start when dmd starts:
(for-each start '(emacs xmodmap gpg-agent offlineimap sshfs mpd))
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