Nicola,

On Sun, Dec 05, 2021 at 03:04:20PM +0000, Nicola Orrù via Dng wrote:
> Hi all,
>
> I'm trying to build a LV2 plugin from source.
>
> The plugin requires libfluidsynth-dev.
>
> Attempting to install libfluidsynth-dev produces the following error:
>
>
> nico@lenovo-devuan:~/Projects/3rdParty/Fluida.lv2$ sudo apt install
> libfluidsynth-dev
> Reading package lists... Done
> Building dependency tree... Done
> Reading state information... Done
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> The following information may help to resolve the situation:
>
> The following packages have unmet dependencies:
> libelogind0 : Conflicts: libsystemd0
> E: Error, pkgProblemResolver::Resolve generated breaks, this may be
> caused by held packages.

You need to use some form of build chroot as documented in
/usr/share/doc/libelogind0/README.Debian. Also see bug #435[1] and related.

HTH.

Mark

[1] https://bugs.devuan.org/435