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Bug#1082668: /usr/bin/blueman-applet: LoadException: Not loading conflicting plugin NMPANSupport

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Control: severity -1 minor
Control: retitle -1 Improve resolution of conflicting plugins
Control: tags -1 patch upstream

I have investigated this more.  I feel I understand more what the code
in PluginManager was trying to do.

I discovered that I had a gsettings setting, as follows:

$ gsettings get org.blueman.general plugin-list
['!TransferService', '!PPPSupport', '!GameControllerWakelock', 'AuthAgent', 'DhcpClient', 'Networking', 'NetUsage', 'SerialManager']
$

This was the root cause of the problem.  I didn't set that explicitly.
Presumably it was set by some previous version.  (My home directory
has survived many different Debian releases.)  Using `gsettings reset`
caused the symptoms to go away in my installation.

In my testing I also found that the DhcpClient plugin actually doesn't
work when I try to do bluetooth tethering with my Android phone.  I
didn't investigate the cause any further.  The NMPANSupport plugin
does work.  In the default configuration, the builtin priority
mechanism would prefer NMPANSupport, which is good.

However, I found the logic in PluginManager confusing and a bit
unprincipled.  I attach a patch to rationalise it.  It may print more
warnings now, but it will not crash unless it actually needs to, and
the logic is now the same (and, I hope, reasonable) in all cases.

Ian.

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Bug#1082668: /usr/bin/blueman-applet: LoadException: Not loading conflicting plugin NMPANSupport Ian Jackson <ijackson@chiark.greenend.org.uk> - 2025-02-03 13:50 +0100

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