Package RWinEdt build failure report

Build errors
ERROR: configuration failed for package 'RWinEdt'
Build output
* checking for file 'RWinEdt/DESCRIPTION' ... OK
* preparing 'RWinEdt':
* checking DESCRIPTION meta-information ... OK
* cleaning src
* installing the package to re-build vignettes
* Installing *source* package 'RWinEdt' ...
Package 'RWinEdt' can only be installed/used under Windows.
** Removing '/private/tmp/Rinst.27551/RWinEdt'
ERROR
Installation failed.