Will do. Thanks. 
    On Sunday, March 3, 2019, 3:59:14 p.m. EST, Ista Zahn <istaz...@gmail.com> 
wrote:  
 
 Hi John,

This is not the place, but if you post your /etc/apt/sources.list to
r-sig-debian I might be able to help you sort it out.

Best,
Ista


On Sun, Mar 3, 2019 at 2:08 PM John Kane <jrkrid...@yahoo.ca> wrote:
>
> Thanks Ista,
>
> Interestingly enough, I have only one repository as far as I can see. I was a 
> bit amazed.
>
> I think I have a faulty Ubuntu installation and will have to reinstall. What 
> fun
>
>
>
> On Sunday, March 3, 2019, 1:16:52 p.m. EST, Ista Zahn <istaz...@gmail.com> 
> wrote:
>
>
> Hi John,
>
> The official instructions at
> https://cran.r-project.org/bin/linux/ubuntu/ work on a fresh
> ubuntu:bionic from dockerhub. This suggests that the issue is due to
> the configuration of your local system rather than with any problem
> with either R or ubuntu. My guess is that you've been reading too many
> blog posts and adding too many ppa's to your system, which can lead to
> package conflicts. Unfortunately in that case it's hard for people to
> help you remotely, since we don't know what you've done to your
> system.
>
> Best,
> Ista
>
> On Sun, Mar 3, 2019 at 6:20 AM John Kane via R-help
> <r-help@r-project.org> wrote:
> >
> >
> >  NOTE. This is a re-post of a message of Saturday 2018-03-03 sent with an 
> >incorrect header.
> >
> > To upgrade to R.3.5.2 from 3.4.4 I have been following the instructions at 
> > https://www.r-bloggers.com/installation-of-r-3-5-on-ubuntu-18-04-lts-and-tips-for-spatial-packages/
> >  .
> >
> > I seem to have the repository properly connected and verified.
> >
> > I am getting an error: 
> > ---------------------------------------------------------------------------------------------------
> >  john@jonh-T510:~$ sudo apt install r-base r-base-core r-recommended 
> > Reading package lists... Done Building dependency tree 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 resolve 
> > the situation:
> >
> > The following packages have unmet dependencies: r-base-core : Depends: 
> > libreadline6 (>= 6.0) but it is not installable Recommends: r-base-dev but 
> > it is not going to be installed E: Unable to correct problems, you have 
> > held broken packages. 
> > -------------------------------------------------------------------------------------------------
> >  Earlier I was getting another error r-base-core : Depends: libpng12-0 but 
> > it is not installable but that was cured by installing libpng12-0 via the 
> > Ubuntu Software app.
> >
> > I cannot find what appears to be an installable version of libreadlines6.
> >
> > Ubuntu reports that the up-to-date version of libreadlines7.
> >
> > Should I consider this an R issue or an Ubuntu issue?
> >
> > In any case, has anyone encountered the problem and beaten it?
> >
> > Thanks
>
> >
> > ______________________________________________
> > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.  
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