Options$repos default problem


I recently had to reload R (3.51). Ever since, whenever I load or update an option, I get a warning:

Warning: unable to access index for repository NA/src/contrib:
scheme not supported in URL 'NA/src/contrib/PACKAGES'

The source of this error is obviou. I looked at options$repos, and the last entry is:


I have been unable to remove this erroneous last entry permanently. Is there a way to reset the startup repos entry to remove this annoying, but apparently harmless, warning?

Thanks in advance for any help with this issue.

Larry Hunsicker


You can set repo with options(repos = c(CRAN = "https://cloud.r-project.org/") that you can put in your .Rprofile.

However, you should have a default repo configured. You can check that you don't have a repos set somewhere that erasing the default one with NA.

Do you have this error in an R session, an RStudio project or every time ?