add 4.1 path

[nbenn]

I'm happy to add to this PR, to make this automatic, e.g. by pulling in versions using r-hub/rversions. What do you think?

[richfitz]

Thanks @nbenn! The place to make it automatic would be in drat.builder (https://github.com/richfitz/drat.builder) which I'll do now. We could hit r-hub for this, though it changes much less frequently than we update the repo. Hopefully by the time that 4.2 has come out we'll be fully transitioned to r-universe (https://mrc-ide.r-universe.dev/ui#packages)

[richfitz]

Sorry I totally misread the repo that this was in 🤦

Thanks again!

[nbenn]

While you're at it, somewhere around

drat.builder/R/drat_builder.R

Line 390 in 713d087

p <- file.path(path, "bin", platform, "contrib", version)

utils::contrib.url() might be of use for path construction? Also, for macOS, not all combinations of "type" and version might be required (at least this is the case on CRAN). From what I saw, it goes something like

• mac.binary.mavericks: 3.2 through 3.3
• mac.binary.el-capitan: 3.4 through 3.6
• mac.binary: 4.0 and onwards

Just fyi, it also works fine the way it is currently.