Re: code reuse in debian/package.config

[Jakub Wilk <jwilk@debian.org>]

* Russ Allbery <rra@debian.org>, 2014-12-28, 14:58:
> The config script runs during a preinstall stage, before the package 
> dependencies are installed. I think that you can work around this by 
> having your internal packages use Pre-Depends for the package that 
> provides your script library (instead of Depends).

Unfortunately, you can't. debconf-devel(7) says:

Note that the config script is run before the package is unpacked. It 
should only use commands that are in essential packages. The only 
dependency of your package that is guaranteed to be met when its config 
script is run is a dependency (possibly versioned) on debconf itself.

--
Jakub Wilk