On Sun, Oct 30, 2022 at 11:39:13PM +0100, aitor wrote:
> Hi,
>
> On 30/10/22 22:58, Joel Roth via Dng wrote:
>
> > Dear colleagues,
> >
> > I got myself into some trouble by upgrading
> > to daedelus, which is not a stable distribution.
> >
> > When I went to install openvpn, I got this error message:
> >
> > The following packages have unmet dependencies:
> > libc6-dev : Breaks: libglib2.0-dev (<= 2.72.3-1) but 2.66.8-1 is to be installed
> > E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
Note that 2.66.8-1 <= 2.72.3-1. I think this was a spurious message.

I was able to solve this with a couple of update/upgrade cycles.

> > I did apt-get update/upgrade before trying this.
> > Also apt-mark showhold didn't list any packages as held.
> >
> > Do you have any suggestions or references?
>
> Perhaps you have some package depending on libglib2.0-dev (=2.66.8-1). There are several
> ways to list dependent packages, i.e. reverse dependencies. But what you need is a way to
> determine the packages that depend on a certain version of a dependency.
> Try with this:
>
> $ aptitude -v --show-summary=all-packages-with-dep-versions why <package_name>

This is useful to know. Safer for checking dependencies than apt-get remove ;-)

Thank you!

> In my system:
>
> ~$ aptitude -v --show-summary=all-packages-with-dep-versions why libglib2.0-dev
> Paquetes que dependen de libglib2.0-dev:
>   libgtk-3-dev D: libglib2.0-dev (>= 2.57.2)
>   librsvg2-dev D: libglib2.0-dev (>= 2.50.0)
>   libvte-2.91-dev D: libglib2.0-dev (>= 2.40.0)
>   libwnck-3-dev D: libglib2.0-dev (>= 2.32)
>   libxfce4panel-2.0-dev D: libglib2.0-dev
>   libxfce4ui-2-dev D: libxfconf-0-dev D: libglib2.0-dev
>   libxklavier-dev D: libglib2.0-dev (>= 2.16.0)
>
> Cheers,
>
> Aitor.
>

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--
Joel Roth