dietpi-software: Mopidy: fix streaming on Trixie

Author: MichaIng

CHANGELOG.txt

@@ -28,6 +28,7 @@ Bug fixes:
 - DietPi-Software | Home Assistant: Resolved an issue where the installation could have failed on RISC-V and ARMv6/7 Bookworm systems due to missing dependencies.
 - DietPi-Software | Home Assistant: Worked around an issue where the installation and service start failed due to a missing upper dependency declaration. The issue has been solved at Home Assistant for their upcoming release, which will make our workaround obsolete.
 - DietPi-Software | BirdNET-Go: The latest (pre-)release will now be detected and installed instead of a hardcoded version, which solves an upstream bug where reviewing bird detections did not work. Many thanks to @Sonnenfleck and @oturn for reporting the issue and testing newer versions, as well as @JappeHallunken for implementing the dynamic release download: https://github.com/MichaIng/DietPi/issues/7861, https://github.com/MichaIng/DietPi/issues/7861
+- DietPi-Software | Mopidy: Resolved an issue where fetching remote streams failed due to an incompatibility between Mopidy and GStreamer on Debian Trixie. Many thanks to @miloit for reporting this issue: https://github.com/MichaIng/DietPi/issues/7866
 
 As always, many smaller code performance and stability improvements, visual and spelling fixes have been done, too much to list all of them here. Check out all code changes of this release on GitHub: https://github.com/MichaIng/DietPi/pull/7900
 

dietpi/dietpi-software

@@ -5106,9 +5106,45 @@ _EOF_
 			G_AGUP
 
 			# APT package
-			G_AGI mopidy gstreamer1.0-alsa mopidy-local
+			local deps=()
+			(( $G_DISTRO == 8 )) && deps=('patch') # Trixie: Patch for Python 3.13: https://github.com/MichaIng/DietPi/issues/7866
+			G_AGI mopidy gstreamer1.0-alsa mopidy-local "${deps[@]}"
 			G_EXEC systemctl stop mopidy
 
+			(( $G_DISTRO == 8 )) && ! grep -q '_get_structure_name' /lib/python3/dist-packages/mopidy/audio/scan.py && G_EXEC patch -d/ -p0 << '_EOF_'
+--- /lib/python3/dist-packages/mopidy/audio/scan.py
++++ /lib/python3/dist-packages/mopidy/audio/scan.py
+@@ -185,6 +185,11 @@
+     return query.parse_seeking()[1]
+
+
++def _get_structure_name(struct: Gst.Structure) -> str:
++    with struct as _struct:
++        return _struct.get_name()
++
++
+ def _process(pipeline, timeout_ms):
+     bus = pipeline.get_bus()
+     tags = {}
+@@ -221,7 +226,7 @@
+                 missing_message = msg
+         elif msg.type == Gst.MessageType.APPLICATION:
+             if msg.get_structure().get_name() == "have-type":
+-                mime = msg.get_structure().get_value("caps").get_name()
++                mime = _get_structure_name(msg.get_structure().get_value("caps"))
+                 if mime and (
+                     mime.startswith("text/") or mime == "application/xml"
+                 ):
+@@ -232,7 +237,7 @@
+             error, _debug = msg.parse_error()
+             if missing_message and not mime:
+                 caps = missing_message.get_structure().get_value("detail")
+-                mime = caps.get_structure(0).get_name()
++                mime = _get_structure_name(caps.get_structure(0))
+                 return tags, mime, have_audio, duration
+             raise exceptions.ScannerError(str(error))
+         elif msg.type == Gst.MessageType.EOS:
+_EOF_
 			G_EXEC_OUTPUT=1 G_EXEC pip3 install -U Mopidy-MusicBox-Webclient
 
 			# Assure user home, data and cache dir as well on custom configs