install Ruby 1.9.3 by default
install Ruby 1.9.3 by default

sky-uk/ruby-buildpack,ericroberts/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,rvizza/heroku-buildpack-gsl-ruby,fcruxen/ruby-buildpack,mintybit/heroku-buildpack-ruby,schu/buildpack-testing,samfrench/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,Jonty/ruby-buildpack,dlorson/gentle-buildpack,Altoros/ruby-buildpack,cloudn/buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,icelab/heroku-buildpack-ruby,righi/instacart-heroku-buildpack,Dim25/heroku-buildpack-ruby-GSL,HYPERHYPER/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,amaltson/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,CPPWind/ruby-buildpack,rowanoulton/heroku-buildpack-ruby,hixi/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,daltonrenaldo/heroku-buildpack-ruby,dleavitt/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,tdenovan/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,aarongray/heroku-buildpack-ruby,Git-Host/prelang-buildpack,ltrademark/heroku-buildpack-ruby,mrhenry/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,hpcloud/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,sky-uk/ruby-buildpack,phusion/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,packetmonkey/heroku-buildpack-ruby,samfrench/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,awebneck/heroku-buildpack-canvas,musicglue/heroku-buildpack-ruby,stefansundin/heroku-buildpack-ruby,catalyzeio/buildpack-ruby,d-reinhold/cf-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,cloudControl/buildpack-ruby,ibmdb/db2rubybuildpack,bskyb-commerce/ruby-buildpack,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,diasks2/heroku-buildpack-mecab,zoomer/heroku-buildpack-ruby-bower,Altoros/ruby-buildpack,ChefSteps/heroku-buildpack-ruby,swipesense/heroku-buildpack-ruby,redhotvengeance/heroku-buildpack-deep-thought,dieze/heroku-buildpack-ruby-hooks,icelab/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,pkgr/buildpack-ruby-precise-old,ekaranto/rails4-bluemix-buildpack,Dim25/heroku-buildpack-ruby-GSL,ilpoldo/heroku-buildpack-ruby,hpcloud/ruby-buildpack,pietrop/heroku-buildpack-ruby,vhx/heroku-buildpack,cloudfoundry/ruby-buildpack,Git-Host/prelang-buildpack,DigitalInnovation/heroku-buildpack-mslabs,leonardykris/mos-ruby-buildpack,space150/heroku-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,dleavitt/heroku-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,DouglasAllen/heroku-buildpack-ruby,Altoros/ruby-buildpack,donnykurnia/heroku-buildpack-ruby,cloudControl/buildpack-ruby,ekaranto/rails4-bluemix-buildpack,AdStage/heroku-buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,swipesense/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,bskyb-commerce/help-heroku-buildpack,diasks2/heroku-buildpack-mecab,ericroberts/heroku-buildpack-ruby,takii/db2rubybuildpack,jgable/buildpack-ruby-rack-setup-tasks,hpcloud/ruby-buildpack,catalyzeio/buildpack-ruby,sstelfox/buildpack-ruby,shuber/heroku-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,ablease/custom-buildpack,ActiveState/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,cloudn/buildpack-ruby,derrek/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,fcruxen/ruby-buildpack,ibmdb/db2rubybuildpack,reesio/heroku-buildpack-ruby,qstream/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,teodor-pripoae/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,codykrieger/heroku-buildpack-jekyll,hatofmonkeys/ruby-testing-buildpack,derrek/heroku-buildpack-ruby,wakermahmud/heroku-buildpack-jekyll,hixi/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,jumptvs/BP_Ruby,ablease/custom-buildpack,michaelphines/alexa-nest,rhomobile/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,bellycard/heroku-buildpack-ruby,sky-uk/ruby-buildpack,wolfoo2931/heroku-buildpack-ruby-2a352ae,rhomobile/heroku-buildpack-ruby,space150/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,pkgr/buildpack-ruby-precise-old,recursecenter/heroku-buildpack-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,sanemat/heroku-buildpack-ruby-tachikoma,fcruxen/ruby-buildpack,takii/db2rubybuildpack,allomov/fat-free-heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,trumaker/heroku-buildpack-turbo-sprockets,barakav/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,codykrieger/heroku-buildpack-jekyll,cloudfoundry/ruby-buildpack,Genius/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,recursecenter/heroku-buildpack-ruby,Jonty/ruby-buildpack,iamjarvo/ruby-buildpack,Micka33/heroku-buildpack-ruby-liblua,guidance-guarantee-programme/heroku-buildpack-princexml-old,DouglasAllen/heroku-buildpack-ruby,aarongray/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,ChefSteps/heroku-buildpack-ruby,zidekmat/buildpack-ruby,wakermahmud/heroku-buildpack-jekyll,ndbroadbent/heroku-buildpack-turbo-sprockets,travis-ci/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,DigitalInnovation/heroku-buildpack-mslabs,dtao/deft-buildpack-ruby,instacart/heroku-buildpack-ruby,dtao/teeny-buildpack,orenyk/heroku-buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,dtao/deft-buildpack-ruby,Jonty/ruby-buildpack,Altoros/ruby-buildpack,jonasoberschweiber/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,bellycard/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,CPPWind/ruby-buildpack,beydogan/ruby-buildpack,awebneck/heroku-buildpack-canvas,phusion/heroku-buildpack-ruby,Scalingo/ruby-buildpack,crdschurch/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk-new,takii/heroku-buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,ilpoldo/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,pietrop/heroku-buildpack-ruby,ruby/heroku-buildpack-www-ruby-lang,jumptvs/BP_Ruby,makifund/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,ekaranto/rails4-bluemix-buildpack,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,ActiveState/heroku-buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,travis-ci/heroku-buildpack-ruby,stefansundin/heroku-buildpack-ruby,AdStage/heroku-buildpack-ruby,Scalingo/ruby-buildpack,pilotcreative/heroku-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,blueapron/heroku-buildpack-ruby,jgable/buildpack-ruby-rack-setup-tasks,leonardykris/mos-ruby-buildpack,engineyard/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,erintherad/heroku-buildpack-ruby,hpcloud/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,scottatron/moc-buildpack,davidjrice/heroku-buildpack-couchbase-ruby,pkgr/buildpack-ruby-precise-old,mrhenry/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,cloudfoundry/ruby-buildpack,trumaker/heroku-buildpack-turbo-sprockets,schu/buildpack-testing,tomwolfe/heroku-buildpack-gsl-ruby,zidekmat/buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,dlorson/gentle-buildpack,cloudn/buildpack-ruby,fcruxen/ruby-buildpack,zoomer/heroku-buildpack-ruby-bower,bskyb-commerce/ruby-buildpack,hellojustin/heroku-buildpack-custom-ruby,gls1/heroku-buildpack-ruby-pdftk-new,beydogan/ruby-buildpack,jasonlevens/heroku-buildpack-ruby,barakav/heroku-buildpack-ruby,takii/db2rubybuildpack,hpcloud/ruby-buildpack,Micka33/heroku-buildpack-ruby-liblua,packetmonkey/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,ltrademark/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,blueapron/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,michaelphines/alexa-nest,dtao/teeny-buildpack,d-reinhold/cf-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,hpcloud/ruby-buildpack,jeremyvdw/heroku-buildpack-ruby-jekyll,heroku/heroku-buildpack-ruby,takii/db2rubybuildpack,engineyard/heroku-buildpack-ruby,Jonty/ruby-buildpack,wolfoo2931/heroku-buildpack-ruby-2a352ae,jumptvs/BP_Ruby,zunda/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,erintherad/heroku-buildpack-ruby,mperejda/heroku-buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,sky-uk/ruby-buildpack,hatofmonkeys/ruby-testing-buildpack,anay/buildpack-ruby-with-oracle-jdk,sstelfox/buildpack-ruby,AdStage/heroku-buildpack-ruby,scottatron/moc-buildpack,tdenovan/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,cmaggard/heroku-buildpack-turbo-sprockets,ericboehs/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,bskyb-commerce/help-heroku-buildpack,rvizza/heroku-buildpack-gsl-ruby,KoanHealth/heroku-buildpack-marvin-setup,pilotcreative/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,schu/heroku-buildpack-ruby,daltonrenaldo/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,electricobjects/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,ablease/custom-buildpack,CPPWind/ruby-buildpack,mattmanning/heroku-buildpack-ruby-jekyll,jonasoberschweiber/heroku-buildpack-ruby,righi/instacart-heroku-buildpack,pkgr/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,ekaranto/rails4-bluemix-buildpack,reesio/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,orenyk/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,sky-uk/help-heroku-buildpack,qnyp/heroku-buildpack-ruby-bower,travis-ci/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,vhx/heroku-buildpack,qstream/heroku-buildpack-ruby,ablease/custom-buildpack,jumptvs/BP_Ruby,electricobjects/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,tpope/heroku-buildpack-ruby-tpope,cmaggard/heroku-buildpack-turbo-sprockets,cloudn/buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,musicglue/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,lyoshenka/heroku-buildpack-ruby-jekyll,pkgr/heroku-buildpack-ruby,jasonlevens/heroku-buildpack-ruby,shuber/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,sky-uk/help-heroku-buildpack,mperejda/heroku-buildpack-ruby,CPPWind/ruby-buildpack,zunda/heroku-buildpack-ruby,HYPERHYPER/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,mintybit/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,redhotvengeance/heroku-buildpack-deep-thought