R missing on Xenial

Hi there,

First, thank you for the awesome tool and the continued community support for Travis CI. It is a very helpful tool in my projects.

I have recently noticed this error. The test fails specifically when I’m trying to prepare the R environment. I have contacted customer support and they suggested me to open a ticket and mention @jeroen and @jimhester . I hope you can give me some suggestions.

Here is the link to the failing test.

https://travis-ci.com/github/Weiming-Hu/AnalogsEnsemble/jobs/380818890

Previously, with this setting, the test should continue. So I’m wondering whether there are any changes to the system that could cause the error. Should I modify my Travis config file?

This is the project page if helpful:

https://travis-ci.com/github/Weiming-Hu/AnalogsEnsemble

Thank you
Weiming

@jeroen @jimhester Here’s a PR that shows PATH change made by the installation logic.

It looks like /opt/R/4.0.0/bin is not being added to PATH here. This PR will allow to see what’s happening instead.

Thank you for the information. Currently, is there any user-side solution to this?

Add /opt/R/*/bin to PATH manually.

Thank you @native-api Actually that does not fix my problem and the same issue remains. I made a request to turn on the Debug mode to connect the server. I found that the path does not exist. Hmmmm…

travis@travis-job-d9844f42-b017-45e7-aeaa-af2012627cc2:~/build/Weiming-Hu/AnalogsEnsemble$ ls /opt/R
ls: cannot access ‘/opt/R’: No such file or directory

Any ideas? I appreciate your help.

1 Like

Okay, found it. Look here: https://travis-ci.com/github/Weiming-Hu/AnalogsEnsemble/jobs/380818890#L801

r-4.0.2 package is being uninstalled when you install g++-5. They must be incompatible or something.

You can run the g++-5 installation manually with -o Debug::pkgProblemResolver=yes to get more information why Apt is deciding so.


AFAICS, g++-5 is installed as part of R installation (so that R can build packages from source). So you don’t need to install it explicitly unless you have special needs.
The g++-5 package from ubuntu-toolchain-r/test must be incompatible with the stock package and causes uninstallation or replacement of everything that depends on it, including r.

It’s good to know that g+±5 is already installed. I don’t have any other specific requirements. Let me remove the installation of g+±5 and try again. Thanks.

So the problem is g+±5 installation. After I remove g+±5 installation, R test is complete with no problem. Thank you very much.

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