R-dev lacks libc-dev and g++ necessary to install R packages
Install R, R-dev and R-doc from edge
Try at the shell R -e ‘options(repos=“https://cran.rstudio.com”);install.packages(“testthat”)’
This doesn’t work due to missing headers etc.
In the APKBUILD for R the packages libc-dev and g need to be added to depends_dev.
(from redmine: issue id 8770, created on 2018-04-05)