`mpradio` broken by changes in bluez-alsa vers. 0.{8,9}

[Hurricos]

Similar issue to what is seen here.

Simply running systemctl enable bluealsa is not sufficient in bluealsa version 0.9, though it worked fine in version 0.7. This is because the bluealsa binary now requires you to specify on the command line which profile you would like to run with, if it is not a2dp-source.

From /usr/bin/bluealsa --help:

By default only output profiles are enabled, which includes A2DP Source and
HSP/HFP Audio Gateways. If one wants to enable other set of profiles, it is
required to explicitly specify all of them using `-p NAME` options.

In order to override manually, we must override systemd. We start off with the following output for systemctl cat bluealsa.service:

# /lib/systemd/system/bluealsa.service
[Unit]
Description=BluezALSA proxy
Requires=bluetooth.service
After=bluetooth.service

[Service]
Type=simple
User=root
ExecStart=/usr/bin/bluealsa

We must edit this and add lines to override ExecStart, via sudo systemctl edit bluealsa.service:

[Service]
ExecStart=
ExecStart=/usr/bin/bluealsa -p a2dp-sink

Once we run sudo systemctl daemon-reload && sudo systemctl restart bluealsa.service, bluealsa and therefore mpradio will return to functioning normally.

I'm looking into what is required to automate the process of editing the systemd configuration for this; the issue I linked above discusses editing an init-file, but since mpradio leverages systemd, this is not a solution. Instead, we should follow standard protocol for modifying systemd files.

As far as I can tell, this just then involves the addition of a few lines to install.sh near where we systemctl enable bluealsa.service:

mkdir -p /etc/systemd/system/bluealsa.service.d/
cat << 'EOF' >> /etc/systemd/system/bluealsa.service.d/override.conf
[Service]
ExecStart=
ExecStart=/usr/bin/bluealsa -p a2dp-sink
EOF

I will write the commit and test.

[morrolinux]

Wow that seems annoying. Thanks for reaching out. I'll wait for your commit :)

[Hurricos]

I've got it done, but it was a pain in the ass on account of the format of the installation file. Going to tackle a few things in that next, but will offer two separate pull requests.

[Hurricos]

Pull request is up; I have done testing and it works fine. Feel free to close when you are satisfied with the results.