Dealing with R versions

Some rules depend on the R version that is used in the project. For example, grepv recommends the use of grepv() over grep(value = TRUE), but this rule only makes sense if the project uses R >= 4.5.0 since this function was introduced in this version.

By default, when the R version used in the project cannot be retrieved, Jarl doesn’t apply rules that depend on an R version. There are two ways to tell Jarl which R version you’re using:

1. you can pass this information by hand using --min-r-version. For example, passing --min-r-version 4.3 will tell Jarl that it can apply rules that depend on R 4.3.0 or before. Rules that depend on R 4.3.1 or more would still be ignored.
2. if your project has a DESCRIPTION file, you can set R (>= x.y.z) in the Depends field and Jarl will retrieve this version.