Update install script for OS compatibility and improvements

[PoRiFiRo123]

Raspberry Pi Audio Receiver Script - Updates

Version Information

Component	Original	Updated
Supported OS	Debian 12 only	Debian 12 & 13
Shairport Sync	4.3.2	4.3.5

---

Critical Compatibility Updates

1. OS Support Extended to Debian 13

# Added support for VERSION_ID "13" alongside "12"
if [[ ! ("$VERSION_ID" == "12" || "$VERSION_ID" == "13") ]]; then

Why: Enables script to run on Debian 13 (Trixie)

2. Hostname Configuration Fallback

if command -v raspi-config &> /dev/null; then
    sudo raspi-config nonint do_hostname ${HOSTNAME}
else
    # Manual hostname configuration for pure Debian
    echo "$NEW_HOSTNAME" | sudo tee /etc/hostname > /dev/null
fi

Why: Pure Debian doesn't include raspi-config

3. Bluetooth Configuration Enhanced

Added to /etc/bluetooth/main.conf:

• PairableTimeout = 0 - Always pairable
• Name = Raspberry Pi - Default name

4. Bluetooth Agent Timing Fixed

Added to systemd service:

ExecStartPre=/bin/sleep 2
ExecStartPre=/usr/bin/bluetoothctl power on
ExecStartPre=/usr/bin/bluetoothctl pairable on

Why: Debian 13 needs explicit initialization and timing delay

5. Bluetooth Unblocking

sudo rfkill unblock bluetooth

Why: Prevents soft-block issues on Debian 13

6. GPIO Group Check

if getent group gpio > /dev/null 2>&1; then
    sudo usermod -a -G gpio shairport-sync
fi

Why: Prevents failure on systems without gpio group

---

New Features Added

1. Audio Output Configuration

Interactive menu to select:

• Auto (system default)
• Headphone jack (3.5mm)
• HDMI

Purpose: Essential for Bluetooth speaker setup requiring 3.5mm output

2. Enhanced User Feedback

Added progress messages:

• "Installing Bluetooth Audio packages..."
• "Building ALAC..."
• "Building NQPTP..."
• "Building Shairport Sync..."

3. Installation Summary

Final summary screen showing:

• Completion status
• Reboot instructions
• Device name for Bluetooth discovery

---

Troubleshooting

Bluetooth not discoverable:

sudo systemctl status bt-agent@hci0.service
sudo rfkill list
bluetoothctl show

No audio output:

amixer
speaker-test -t wav -c 2

[davidcooper1]

This needs to include systemd-dev as well like in #187. When testing on a fresh install of RaspiOS Lite 13 this fails due to this missing dependency during the make process.

[nicokaiser]

Thanks for this PR. I will have a look at it in detail soon. However I would like to keep this project as slim as possible: so it will only support Raspberry Pi OS in only one version (13). Making it work on other systems (like Raspberry Pi OS Legacy (based on Debian 12) or Debian) should be trivial, but will not be covered by this script.