[R-sig-Debian] Updating to R 4.5.1 on Ubuntu Plucky

[Simone Blomberg]

Two steps:

sudo curl -fsSL https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | gpg --dearmor | sudo tee /etc/apt/keyrings/cran.gpg > /dev/null

This downloads the key, turns it in to a binary in the correct format, then writes the key in the keyring.

Then I edited my R .sources file ( in directory: /etc/apt/sources.list.d)  and pasted in the following in the Signed By: field.

/etc/apt/keyrings/cran.gpg

So now my R .sources file looks like this:

Types: deb
URIs: https://cloud.r-project.org/bin/linux/ubuntu/
Suites: noble-cran40/
Components:
Signed-By: /etc/apt/keyrings/cran.gpg

then sudo apt update and the Missing Signed-By notice is gone. Now just have to wait for Michael to give us R 4.5.1!

And I didn't even need to make a cup of coffee! Will do that now...

Thanks Dirk and everyone for making R available on Linux, and specifically Ubuntu.

Cheers,

Simone.



Dr. Simone Blomberg, BSc (Hons), PhD, MAppStat, (she/her) Why it matters.<https://medium.com/gender-inclusivit/why-i-put-pronouns-on-my-email-signature-and-linkedin-profile-and-you-should-too-d3dc942c8743>

Associate Professor | School of the Environment
The University of Queensland | St. Lucia | Queensland 4072 | Australia
email: S.Blomberg1_at_uq.edu.au

Honorary Associate Professor | Division of Ecology and Evolution

Research School of Biology | Australian National University


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________________________________
From: Dirk Eddelbuettel <edd using debian.org>
Sent: Monday, June 16, 2025 1:59 PM
To: Simone Blomberg <s.blomberg1 using uq.edu.au>
Cc: Dirk Eddelbuettel <edd using debian.org>; r-sig-debian using r-project.org <r-sig-debian using r-project.org>
Subject: Re: [R-sig-Debian] Updating to R 4.5.1 on Ubuntu Plucky


Hi Simone,

On 16 June 2025 at 03:45, Simone Blomberg wrote:
| Thanks for your help. I really appreciate it! I followed the instructions for
| installation that are on CRAN. It may be just that Michael hasn't updated the
| .deb packages yet. I'll wait and see. The handling of the apt sources list has
| changed a bit in the last couple of Ubuntu releases. I thought maybe that was
| causing a problem. Also, I should probably RTFM. 😄

There are two distinct issues here, and you are conflating them. Treating
them separately makes it easier.

One is that indeed as of right now we have no R 4.5.1 for Ubuntu at CRAN.
Michael will get to it, he always has. (I did my part on the Debian bits he
uses, now we wait.) You can use rocker/r-base aka r-base with 4.5.1 now, as
you can for Debian unstable/testing.

Two is that apt input format changed from .list to .sources, and also changes
how security keys are reported / required -- all following some time after
22.04. I think that hit me for 24.04 but my repos (i.e. r2u) do the right
thing now, as do the machines I run. How to set that up on your end is more
of a generic Ubuntu question you could google (and sorry I do this to you but
I don't have a link handy as I said it is coming up to 23h on a Sunday
here). My scripts (for r2u, for r-ci, ... ) do the right thing, you can find
it there too. I have no issue either on this machine (still 24.10 nor on
another updated to 25.04).

I am sure you can sort this out over one fresh hot cup of coffee or tea. If
and when you do feel would you mind sending the notes to this thread?

Thanks, Dirk

--
dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org

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