gnu: Add soundconverter.

* gnu/packages/gnome.scm (soundconverter): New variable.
* gnu/packages/patches/soundconverter-remove-gconf-dependency.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/local.mk

@@ -1150,6 +1150,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/slim-reset.patch				\
   %D%/packages/patches/slim-login.patch				\
   %D%/packages/patches/sooperlooper-build-with-wx-30.patch 	\
+  %D%/packages/patches/soundconverter-remove-gconf-dependency.patch	\
   %D%/packages/patches/soundtouch-CVE-2018-14044-14045.patch 	\
   %D%/packages/patches/soundtouch-CVE-2018-1000223.patch 	\
   %D%/packages/patches/steghide-fixes.patch			\

gnu/packages/gnome.scm

@@ -7220,6 +7220,71 @@ (define-public sound-juicer
 mp3, Ogg Vorbis and FLAC")
     (license license:gpl2+)))
 
+(define-public soundconverter
+  (package
+    (name "soundconverter")
+    (version "3.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://launchpad.net/soundconverter/trunk/"
+                           version "/+download/"
+                           "soundconverter-" version ".tar.xz"))
+
+       (sha256
+        (base32
+         "1wrxf5py54xplrf97qp24pzbis0cvax5c6k0c7vr3z3ry8r7gd7c"))
+       (patches
+        (search-patches
+         "soundconverter-remove-gconf-dependency.patch"))))
+    (build-system glib-or-gtk-build-system)
+    (arguments
+     `(#:imported-modules ((guix build python-build-system)
+                           (guix build glib-or-gtk-build-system)
+                           ,@%gnu-build-system-modules)
+
+       #:modules ((guix build glib-or-gtk-build-system)
+                  (guix build utils)
+                  ((guix build gnu-build-system) #:prefix gnu:)
+                  ((guix build python-build-system) #:prefix python:))
+
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-POTFILES.in
+           (lambda _
+             (substitute* "po/POTFILES.in"
+               ;; This file doesn't exist, so without removing it, the 'check
+               ;; phase fails for the po directory
+               (("soundconverter/gconfstore\\.py") ""))))
+         (add-after 'install 'wrap-soundconverter-for-python
+           (assoc-ref python:%standard-phases 'wrap))
+         (add-after 'install 'wrap-soundconverter
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out               (assoc-ref outputs "out"))
+                   (gi-typelib-path   (getenv "GI_TYPELIB_PATH"))
+                   (gst-plugin-path   (getenv "GST_PLUGIN_SYSTEM_PATH")))
+               (wrap-program (string-append out "/bin/soundconverter")
+                 `("GI_TYPELIB_PATH"        ":" prefix (,gi-typelib-path))
+                 `("GST_PLUGIN_SYSTEM_PATH" ":" prefix (,gst-plugin-path))))
+             #t)))))
+    (native-inputs
+     `(("intltool" ,intltool)
+       ("pkg-config" ,pkg-config)
+       ("glib:bin" ,glib "bin")))
+    (inputs
+     `(("gtk+" ,gtk+)
+       ("python" ,python)
+       ("python-pygobject" ,python-pygobject)
+       ("gstreamer" ,gstreamer)
+       ("gst-plugins-base" ,gst-plugins-base)))
+    (home-page "http://soundconverter.org/")
+    (synopsis "Convert between audio formats with a graphical interface")
+    (description
+     "SoundConverter supports converting between many audio formats including
+Opus, Ogg Vorbis, FLAC and more.  It supports parallel conversion, and
+configurable file renaming. ")
+    (license license:gpl3)))
+
 (define-public workrave
   (let ((commit "v1_10_21"))
     (package

gnu/packages/patches/soundconverter-remove-gconf-dependency.patch

@@ -0,0 +1,83 @@
+From: Sebastian Ramacher <sebastian@ramacher.at>
+Date: Fri, 6 Apr 2018 13:25:35 +0200
+Subject: Only fetch profiles if GConf is still available
+
+---
+ bin/soundconverter.py       |  1 -
+ soundconverter/gstreamer.py | 44 ++++++++++++++++++++++++--------------------
+ 2 files changed, 24 insertions(+), 21 deletions(-)
+
+diff --git a/bin/soundconverter.py b/bin/soundconverter.py
+index 39055ce..5198443 100644
+--- a/bin/soundconverter.py
++++ b/bin/soundconverter.py
+@@ -66,7 +66,6 @@ def _check_libs():
+         import gi
+         gi.require_version('Gst', '1.0')
+         gi.require_version('Gtk', '3.0')
+-        gi.require_version('GConf', '2.0')
+         from gi.repository import GObject
+         # force GIL creation - see https://bugzilla.gnome.org/show_bug.cgi?id=710447
+         import threading
+diff --git a/soundconverter/gstreamer.py b/soundconverter/gstreamer.py
+index 23aaa9b..211b052 100644
+--- a/soundconverter/gstreamer.py
++++ b/soundconverter/gstreamer.py
+@@ -25,7 +25,7 @@ from urllib.parse import urlparse
+ from gettext import gettext as _
+ 
+ import gi
+-from gi.repository import Gst, Gtk, GObject, GConf, Gio
++from gi.repository import Gst, Gtk, GObject, Gio
+ 
+ from soundconverter.fileoperations import vfs_encode_filename, file_encode_filename
+ from soundconverter.fileoperations import unquote_filename, vfs_makedirs, vfs_unlink
+@@ -66,25 +66,29 @@ _GCONF_PROFILE_LIST_PATH = "/system/gstreamer/1.0/audio/global/profile_list"
+ audio_profiles_list = []
+ audio_profiles_dict = {}
+ 
+-_GCONF = GConf.Client.get_default()
+-profiles = _GCONF.all_dirs(_GCONF_PROFILE_LIST_PATH)
+-for name in profiles:
+-    if _GCONF.get_bool(_GCONF_PROFILE_PATH + name + "/active"):
+-        # get profile
+-        description = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/name")
+-        extension = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/extension")
+-        pipeline = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/pipeline")
+-        # check profile validity
+-        if not extension or not pipeline:
+-            continue
+-        if not description:
+-            description = extension
+-        if description in audio_profiles_dict:
+-            continue
+-            # store
+-        profile = description, extension, pipeline
+-        audio_profiles_list.append(profile)
+-        audio_profiles_dict[description] = profile
++try:
++    from gi.repository import GConf
++    _GCONF = GConf.Client.get_default()
++    profiles = _GCONF.all_dirs(_GCONF_PROFILE_LIST_PATH)
++    for name in profiles:
++        if _GCONF.get_bool(_GCONF_PROFILE_PATH + name + "/active"):
++            # get profile
++            description = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/name")
++            extension = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/extension")
++            pipeline = _GCONF.get_string(_GCONF_PROFILE_PATH + name + "/pipeline")
++            # check profile validity
++            if not extension or not pipeline:
++                continue
++            if not description:
++                description = extension
++            if description in audio_profiles_dict:
++                continue
++                # store
++            profile = description, extension, pipeline
++            audio_profiles_list.append(profile)
++            audio_profiles_dict[description] = profile
++except ImportError:
++    pass
+ 
+ required_elements = ('decodebin', 'fakesink', 'audioconvert', 'typefind', 'audiorate')
+ for element in required_elements: