20.10: Installing a .deb with dependencies -- HowTo?

[Robert Heller]

At Mon, 26 Apr 2021 15:56:44 +0100 "Ubuntu user technical support,? not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> On Mon, 26 Apr 2021 at 14:41, Robert Heller <heller at deepsoft.com> wrote:
> >
> > At Mon, 26 Apr 2021 12:18:23 +0100 "Ubuntu user technical support,? not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:
> >
> > >
> > > installed the dependencies.  Is the deb file available for download
> > > somewhere?
> >
> > Yes, from the ODA website:
> >
> > https://www.opendesign.com/guestfiles/oda_drawings_explorer
> >
> > I did it on a freshly installed 20.10 VM (minimum desktop install).
> 
> Is this the error you got?

Yep.

> 
> $ sudo dpkg -i Downloads/ODADrawingsExplorer_QT5_lnxX64_7.2dll_22.3.deb
> dpkg: regarding .../ODADrawingsExplorer_QT5_lnxX64_7.2dll_22.3.deb
> containing odadrawingsexplorer, pre-dependency problem:
>  odadrawingsexplorer pre-depends on qt5-default (>= 5.3.0)
>   qt5-default is not installed.
> dpkg: error processing archive
> Downloads/ODADrawingsExplorer_QT5_lnxX64_7.2dll_22.3.deb (--install):
>  pre-dependency problem - not installing odadrawingsexplorer
> Errors were encountered while processing:
>  Downloads/ODADrawingsExplorer_QT5_lnxX64_7.2dll_22.3.deb
> 
> It isn't a 20.10 issue, it is the fact that the package has
> qt5-default specified as a pre-dependency, which means that dpkg can't
> even think about installing it unless that package is installed first.
> Why they have done that I don't know.  I have never come across that
> problem before.  I haven't got an 18.04 system but I would be very
> surprised if it was any different on that.
> 
> Colin
> 

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