Thank you so much Johannes. Problem now sorted:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9 sudo add-apt-repository deb https://cran.ma.imperial.ac.uk/bin/linux/ubuntu xenial/ # replaced the old repository link sudo apt-get update sudo apt-get install r-base r-base-core r-base-dev With my .Renviron file already fixed from previously with the correct paths inserted, my R 3.4.0 is now up and running with LaTeX run successfully. I've also taken care to delete your Debian R key from my machine, retaining the Ubuntu one. I rather think it would be a good idea to publicise this solution for Linux Mint 18.1 users *as widely as possible* so that they don't run into the same unnecessary difficulties I just did: it would not be immediately obvious to all such users (it wasn't to me) that they should instead be downloading and installing from the Ubuntu and not the Debian repository. (Indeed, I had used the Debian repository successfully on my previous install of Linux Mint.) *It certainly shouldn't be buried in a thread on a mailing list!* May I also extend my grateful thanks to Professor J C Nash for his help. Yours with thanks, Clive Nicholas On 27 April 2017 at 23:20, Johannes Ranke <johannes.ra...@jrwb.de> wrote: > Am Donnerstag, 27. April 2017, 15:05:32 schrieb J C Nash: > > Is there a reason for jessie-cran3 rather than xenial? For Linux Mint 18 > > (admittedly not 18.1) I have > > > > deb https://cloud.r-project.org/bin/linux/ubuntu xenial/ > > > > as one of the apt entries. > > > > JN > > Seconded. You should not expect that mixing apt entries for Ubuntu and > Debian > will work. > > > > It didn't work and I simply get the same SHA1 weak algorithm error when > > > running -sudo apt-get update- or -sudo apt update-. > > jessie-cran3 is made for Debian jessie which uses a somewhat dated version > of > apt, which does not complain about weak SHA1 checksums. > > > > (Why is this issue not > > > mentioned at all here <https://cran.r-project.org/> and why have users > > > like > > > me had to go ferreting for it, amongst other things?) > > Because Michael Rutter (for the Ubuntu backports) and myself (for the > Debian > backports) try our best to make things just work for the distributions for > which these backports are advertised. The user should generally not have to > worry about the checksum algorithms used by his distribution. > > Mint 18.1 is based on Ubuntu 16.04 AKA Xenial Xerus. So it seems to me you > should use an apt entry (and only *one* for the CRAN R packages) for > xenial as > John recommended. > > Kind regards, I sort of feel with you, as I sometimes also get frustrated. > But > usually the satisfaction to work with free software prevails! > > Cheers, > > Johannes > > > > > > > I've been a Linux user for six years and pride myself on researching as > > > many possible forums when trying to fix stuff before asking for any > help, > > > have never had to confront this nonsense and I'm really fed up with > this > > > now; I very strongly object to what have been hitherto (reasonably) > > > straightforward R download and installation procedures making a total > > > idiot > > > of me when I try my damnednest to follow all the steps to do it all > > > correctly in much the same way as I have done before without too many > > > issues. > > > > > > Please advise at your very earliest convenience and help me sort this > out. > > > Thank you. > > > > _______________________________________________ > > R-SIG-Debian mailing list > > R-SIG-Debian@r-project.org > > https://stat.ethz.ch/mailman/listinfo/r-sig-debian > -- Clive Nicholas "My colleagues in the social sciences talk a great deal about methodology. I prefer to call it style." -- Freeman J. Dyson [[alternative HTML version deleted]] _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian
