For some reason all of a sudden I can't install any packages including dplyr, readr, ggplot2. It seems to be a problem with rlang or tibble. I've tried manually installing rlang and also using
install.packages("rlang", dependencies = TRUE). I get an error:
* installing *source* package ‘rlang’ ...
** package ‘rlang’ successfully unpacked and MD5 sums checked
** libs
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
ERROR: compilation failed for package ‘rlang’
* removing ‘/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rlang’
Warning in install.packages :
installation of package ‘rlang’ had non-zero exit status