osx - How can the R location be customized for RStudio -

i used homebrew install r , package installer rstudio. started using boxen, takes on homebrew. had re-install r source using homebrew, , exists in boxen cellar location. rstudio no longer launches, saying "unable locate r binary scanning standard locations". tried reinstalling rstudio (i needed upgrade anyway) didn't help. doesn't open long enough let specify custom location.

ok figured out finally. discovered this post can set rstudio_which_r custom location. on mountain lion, done with:

echo setenv rstudio_which_r [your custom bin path]/r | launchctl 

another option set softlink /usr/local/bin custom r path, above seems better solution.