[R] repository for ubuntu/linux mint for R 4.0.0

[J C Nash]

Given there's confirmation of some issue with the repositories,
I'm wondering where it should be reported for fixing. It looks like
the repo has been set up but not copied/moved to the appropriate
server or location, i.e., cloud rather than cran. My guess is that
there are some users struggling and thinking that they have made an
error. The msg on my machine concerned the Release.key file, but
the reality is a missing repo. Once I recognized that, it didn't
take too long to get R4.0 running.

JN


On 2020-04-29 8:22 p.m., Rasmus Liland wrote:
> On 2020-04-29 19:55 -0400, ProfJCNash wrote:
>> In updating (an older computer with) Linux Mint 18.3 I tried to add
>> the repository
>>
>> deb https://cloud.r-project.org/bin/linux/ubuntu xenial-cran40/
>>
>> as per the "Download R for Linux" instructions. This gave an error
>> that there was no Release.key file.
>>
>> After some investigation, I found that
>>
>> deb https://cran.r-project.org/bin/linux/ubuntu xenial-cran40/
>>
>> i.e., CRAN not CLOUD. With this change, I could install R 4.0.
>>
>> Is this a known glitch?
> 
> Dear JN,
> 
> perhaps it is a glitch ... does anyone run mirmon[1] on the R 
> mirrors to see which ones are old?
> 
> If you open those two addresses in a browser, you see that the 
> xenial-cran40 folder is only present in cran case ...  These are 
> two different servers, which can also be seen by running curl:
> 
> 	rasmus using twentyfive ~ % curl -I https://cloud.r-project.org/bin/linux/ubuntu/
> 	HTTP/2 200 
> 	content-type: text/html;charset=ISO-8859-1
> 	date: Thu, 30 Apr 2020 00:05:13 GMT
> 	server: Apache/2.4.39 (Unix)
> 	cache-control: max-age=1800
> 	expires: Thu, 30 Apr 2020 00:35:13 GMT
> 	x-cache: Miss from cloudfront
> 	...
> 	
> 	rasmus using twentyfive ~ % curl -I https://cran.r-project.org/bin/linux/ubuntu/
> 	HTTP/1.1 200 OK
> 	Date: Thu, 30 Apr 2020 00:05:23 GMT
> 	Server: Apache
> 	Content-Type: text/html;charset=UTF-8
> 
> It is wise to point your package manager to a mirror[2] close to you 
> instead of a cdn, e.g. [3] or something ... 
> 
> Best,
> Rasmus
> 
> [1] https://spacehopper.org/mirmon/
> [2] https://cran.r-project.org/mirrors.html
> [3] https://mirror.las.iastate.edu/CRAN/bin/linux/ubuntu/
>