Properly install RcppArmadillo in R

Hello,

I posted it first here, since I think it might be a bug, but it was flagged, so I would like to ask here again:

When using the homebrew version of R, RcppArmadillo install seems to fail because of compiler issues. Manually installing a clang version seems to work, but is there an approach without requiring installing dev headers to system?

This seems more like a question for the developers than the people who have package somewhat related software. All the info I have is that if you need to manually install headers it’ll stop working sometime soon as Apple isn’t planning on keeping that option around for long.