GNU bug report logs - #69692
[PATCH] gnu: Add home-jellyfin-mpv-shim-service-type.

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From: Ian Eure <ian <at> retrospec.tv>
To: 69692 <at> debbugs.gnu.org
Cc: Ian Eure <ian <at> retrospec.tv>
Subject: [bug#69692] [PATCH v3] gnu: Add home-jellyfin-mpv-shim-service-type.
Date: Mon, 21 Apr 2025 17:11:47 -0700

* gnu/home/services/media.scm (home-jellyfin-mpv-shim-service-type): New variable.
* doc/guix.texi (Jellyfin Services): New section.
* doc/guix.texi (Kodi Services): Add subheading.

Change-Id: I037ab0602214fdaa1b032be51ff98ecf6b7ee16c
---
 doc/guix.texi               | 28 ++++++++++++++++++
 gnu/home/services/media.scm | 59 ++++++++++++++++++++++++++++++++++++-
 2 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index bf9cb47478..988c2d69d4 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -50426,6 +50426,8 @@ an example of a service and its configuration that you could add to the
 @subsection Media Home Services
 
 @cindex kodi
+@subsubheading Kodi Services
+
 The @uref{https://kodi.tv, Kodi media center} can be run as a daemon on
 a media server.  With the @code{(gnu home services kodi)} service, you
 can configure Kodi to run upon login.
@@ -50861,6 +50863,32 @@ mouse bindings.
 @end table
 @end deftp
 
+@cindex jellyfin
+@subsubheading Jellyfin Services
+
+The @code{home-jellyfin-mpv-shim-service-type} in the @code{(gnu home services media)} module runs a cast client for the @uref{https://jellyfin.org/, Jellyfin} media system.
+
+To enable, add this to your home services:
+
+@lisp
+(service home-jellyfin-mpv-shim-service-type)
+@end lisp
+
+The service starts only if @code{jellyfin-mpv-shim} has been configured with a remote server and credentials.  This must be done manually, by launching @code{jellyfin-mpv-shim}.  After configuring the server, the service will start automatically when you log in.
+
+@defvar home-jellyfin-mpv-shim-service-type
+Type of the service which launches Jellyfin MPV Shim.
+@end defvar
+
+@deftp {Data Type} home-jellyfin-mpv-shim-configuration
+Available @code{home-jellyfin-mpv-shim-configuration} fields are:
+
+@table @asis
+@item @code{package} (default: @code{jellyfin-mpv-shim}) (type: package)
+The Jellyfin MPV Shim package to use.
+@end table
+@end deftp
+
 @node Networking Home Services
 @subsection Networking Home Services
 
diff --git a/gnu/home/services/media.scm b/gnu/home/services/media.scm
index c6454dfe15..1fd11e0e16 100644
--- a/gnu/home/services/media.scm
+++ b/gnu/home/services/media.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2023 Janneke Nieuwenhuizen <janneke <at> gnu.org>
+;;; Copyright © 2024, 2025 Ian Eure <ian <at> retrospec.tv>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -19,14 +20,20 @@
 (define-module (gnu home services media)
   #:use-module (srfi srfi-26)
   #:use-module (gnu home services)
+  #:use-module (gnu home services desktop)
   #:use-module (gnu home services shepherd)
   #:use-module (gnu packages kodi)
+  #:use-module (gnu packages video)
   #:use-module (gnu services configuration)
   #:use-module (gnu services shepherd)
+  #:use-module (guix packages)
   #:use-module (guix records)
   #:use-module (guix gexp)
   #:export (home-kodi-configuration
-            home-kodi-service-type))
+            home-kodi-service-type
+
+            home-jellyfin-mpv-shim-configuration
+            home-jellyfin-mpv-shim-service-type))
 
 
 ;;;
@@ -66,3 +73,53 @@ (define home-kodi-service-type
    (description
     "Install and configure the Kodi media center so that it runs as a Shepherd
 service.")))
+
+(define-configuration home-jellyfin-mpv-shim-configuration
+  (package
+   (package jellyfin-mpv-shim)
+   "The Jellyfin MPV Shim package to use"))
+
+(define (jellyfin-mpv-shim-shepherd-service config)
+  (list (shepherd-service
+         (documentation "Jellyfin MPV Shim.")
+         (provision '(jellyfin-mpv-shim jellyfin-client))
+
+         ;; Depend on 'x11-display', which sets 'DISPLAY' if an X11 server is
+         ;; available, and fails to start otherwise.
+         (requirement '(x11-display))
+
+         (modules '((srfi srfi-1)
+                    (srfi srfi-26)
+                    (srfi srfi-98)))
+         (start
+          #~(lambda _
+              ;; Only start if a server has been configured.
+              (if (file-exists?
+                   (string-append
+                    (get-environment-variable "XDG_CONFIG_HOME")
+                    "/jellyfin-mpv-shim/cred.json"))
+                  (fork+exec-command
+                   (list
+                    #$(file-append
+                       (home-jellyfin-mpv-shim-configuration-package config)
+                       "/bin/jellyfin-mpv-shim"))
+
+                   ;; Inherit the 'DISPLAY' variable set by 'x11-display'.
+                   #:environment-variables
+                   (cons (string-append "DISPLAY=" (getenv "DISPLAY"))
+                         (remove (cut string-prefix? "DISPLAY=" <>)
+                                 (default-environment-variables))))
+                  #f)))
+         (stop #~(make-kill-destructor)))))
+
+(define-public home-jellyfin-mpv-shim-service-type
+  (service-type
+   (name 'home-jellyfin-mpv-shim)
+   (extensions (list (service-extension home-shepherd-service-type
+                                        jellyfin-mpv-shim-shepherd-service)
+                     ;; Ensure 'home-x11-service-type' is instantiated so we
+                     ;; can depend on the Shepherd 'x11-display' service.
+                     (service-extension home-x11-service-type
+                                        (const #t))))
+   (default-value (home-jellyfin-mpv-shim-configuration))
+   (description "Run Jellyfin MPV Shim.")))
-- 
2.49.0

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