On Sun, 2017-08-20 at 18:57 +0200, Ivan J. wrote:
>
> > Quick and dirty method (tested with another package):
> >
> > [cut]

(code for debian/postinst)

> Very well, I'll implement the latter if it's necessary then.
>
> I also have a file called debian/eudev.postinst . I suppose it won't
> interfere with this postinst file?

I think you have to add that code snippet to debian/eudev.postinst for
things to work out all right.