There is a default R option for which repos to install from - `getOption("repos")`.
When installing a package using install.packages(), you can provide a `repos` parameter. The default value of that parameter is `getOption("repos")`. I assumed that this parameter would override the R option. In other words, I assumed that if the parameter is provided, then the R option would not even be looked at. But after testing this, it seems this is not the case. For example, running the following two lines in an R session: options(repos=c(CRAN="https://BADNAME.com")) install.packages("vctrs", repos = "https://cloud.R-project.org") I would have expected the first line to be rendered meaningless, but in fact after running the second line I see errors about the BADNAME repository. This feels like a bug to me, but I'm sure there's a reason behind this. Does anyone know why this is the case? [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.