Only modify path when ruby is installed
Only modify path when ruby is installed



Scalingo/ruby-buildpack,pkgr/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,ericboehs/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,makifund/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,Scalingo/ruby-buildpack,brightbytes/heroku-buildpack-ruby-without-assets-precompile,Genius/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,ruby/heroku-buildpack-www-ruby-lang,instacart/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,Genius/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,donnykurnia/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,brightbytes/heroku-buildpack-ruby-without-assets-precompile,donnykurnia/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby