Install SpoCon on BookWorm and Later if Installer Fails

spocon.md

Installer Failure Modes

Failure: Unmet Dependendencies

Open JDK 8, 11 are unavailable for Bookworm and later

The following packages have unmet dependencies:
 spocon : Depends: openjdk-11-jre but it is not installable or
                   openjdk-8-jre but it is not installable

Resolution:

SpoCon is pinned to JDK 8, 11, but will work with open JDK 17. The dependencies can be manually updated.

1. Run the installer script to setup the PPA keys: curl -sL https://spocon.github.io/spocon/install.sh | sh
2. Download the spocon package manually: apt download spocon
3. Make a temporary directory to unpack the .deb package: mkdir temp
4. Unpack the .deb: dpkg-deb -R spcoon_your_version.deb temp
5. Edit ./temp/DEBIAN/control and change the dependencies to add JDK 17 Depends: libasound2, adduser, openjdk-11-jre | openjdk-8-jre | openjdk-17-jre
6. Repackage the .deb: dpkg-deb -b ./temp spocon_fixed.deb
7. Install: sudo apt install ./spocon_fixed.deb
8. Set the volume in /opt/spocon/config.toml

[player]
        # ...
        # Initial volume (0-65536) 10993 is 1/6 max
        initialVolume = 10993
        # ...
        # Number of volume notches
        volumeSteps = 32

9. Restart spocon/librespot sudo systemctl restart spocon.service