jruby isn't always in the front of the package names
jruby isn't always in the front of the package names

centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,qstream/heroku-buildpack-ruby,cloudControl/buildpack-ruby,iamjarvo/ruby-buildpack,dieze/heroku-buildpack-ruby-hooks,guidance-guarantee-programme/heroku-buildpack-princexml-old,thirdprestige/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,crdschurch/heroku-buildpack-ruby,fcruxen/ruby-buildpack,catalyzeio/buildpack-ruby,recursecenter/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,fcruxen/ruby-buildpack,takii/db2rubybuildpack,packetmonkey/heroku-buildpack-ruby,nicholasmott/heroku-buildpack-octopress,rvizza/heroku-buildpack-gsl-ruby,amaltson/heroku-buildpack-ruby,dtao/teeny-buildpack,hellojustin/heroku-buildpack-custom-ruby,DyegoCosta/heroku-buildpack-ruby,dtao/deft-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,bskyb-commerce/ruby-buildpack,schu/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,awebneck/heroku-buildpack-canvas,lemurheavy/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,tomwolfe/heroku-buildpack-gsl-ruby,donnykurnia/heroku-buildpack-ruby,redhotvengeance/heroku-buildpack-deep-thought,barakav/heroku-buildpack-ruby,stefansundin/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,ActiveState/heroku-buildpack-ruby,ltrademark/heroku-buildpack-ruby,awebneck/heroku-buildpack-canvas,stolt45/heroku-buildpack-ruby-with-sqlite3,jumptvs/BP_Ruby,nicholasmott/heroku-buildpack-octopress,thirdprestige/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,wolfoo2931/heroku-buildpack-ruby-2a352ae,sgnpa/heroku-buildpack-cas,Genius/heroku-buildpack-ruby,Dim25/heroku-buildpack-ruby-GSL,beydogan/ruby-buildpack,meskyanichi/heroku-buildpack-middleman,pkgr/buildpack-ruby-precise-old,ltrademark/heroku-buildpack-ruby,lemurheavy/heroku-buildpack-ruby,jcamenisch/heroku-buildpack-rgeo,davidjrice/heroku-buildpack-couchbase-ruby,Dim25/heroku-buildpack-ruby-GSL,thirdprestige/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,Scalingo/ruby-buildpack,CPPWind/ruby-buildpack,derrek/heroku-buildpack-ruby,bskyb-commerce/help-heroku-buildpack,mintybit/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,diasks2/heroku-buildpack-mecab,jonseaberg/heroku-buildpack-turbo-sprockets,jumptvs/BP_Ruby,darron/heroku-buildpack-ruby-jekyll,mperejda/heroku-buildpack-ruby,pkgr/buildpack-ruby-precise-old,takii/db2rubybuildpack,travis-ci/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,orenyk/heroku-buildpack-ruby,hpcloud/heroku-buildpack-ruby,ericroberts/heroku-buildpack-ruby,daltonrenaldo/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,jumptvs/BP_Ruby,ekaranto/rails4-bluemix-buildpack,sanemat/heroku-buildpack-ruby-tachikoma,atmos/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,Jonty/ruby-buildpack,jonasoberschweiber/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,cloudfoundry/ruby-buildpack,michaelphines/alexa-nest,simonnordberg/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,zoomer/heroku-buildpack-ruby-bower,erintherad/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,pilotcreative/heroku-buildpack-ruby,progrium/heroku-buildpack-ruby,sky-uk/ruby-buildpack,hpcloud/ruby-buildpack,hatofmonkeys/ruby-testing-buildpack,righi/instacart-heroku-buildpack,swipesense/heroku-buildpack-ruby,leonardykris/mos-ruby-buildpack,moneyadviceservice/heroku-buildpack-ruby-bowndler,moneyadviceservice/heroku-buildpack-ruby-bowndler,HYPERHYPER/heroku-buildpack-ruby,Altoros/ruby-buildpack,ndbroadbent/heroku-buildpack-turbo-sprockets,joshco/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,joshco/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,ndbroadbent/heroku-buildpack-turbo-sprockets,12spokes/heroku-buildpack-ruby-imagemagick,ActiveState/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,cloudControl/buildpack-ruby,daltonrenaldo/heroku-buildpack-ruby,wakermahmud/heroku-buildpack-jekyll,DouglasAllen/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,tpope/heroku-buildpack-ruby-tpope,cloudfoundry/ruby-buildpack,bwaite-jaroop/heroku-buildpack-ruby,adaptivelab/heroku-buildpack-adaptivelab-website-2,electricobjects/heroku-buildpack-ruby,packetmonkey/heroku-buildpack-ruby,schu/buildpack-testing,pavgup/heroku-buildpack-ruby-lateslugignore,pkgr/heroku-buildpack-ruby,musicglue/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,gls1/heroku-buildpack-ruby-pdftk,michaelphines/alexa-nest,atmos/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,hpcloud/ruby-buildpack,pavgup/heroku-buildpack-ruby-lateslugignore,amaltson/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,hausdorff/heroku-buildpack-ruby-jekyll,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,vhx/heroku-buildpack,blueapron/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,Numerico/heroku-buildpack-ruby,progrium/heroku-buildpack-ruby,darron/heroku-buildpack-ruby-jekyll,pavgup/heroku-buildpack-ruby-lateslugignore,firmhouse/heroku-buildpack-ruby-freetds,CPPWind/ruby-buildpack,catalyzeio/buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,allomov/fat-free-heroku-buildpack-ruby,rstacruz/heroku-buildpack-middleman,lemurheavy/heroku-buildpack-ruby,ilpoldo/heroku-buildpack-ruby,sstelfox/buildpack-ruby,rstacruz/heroku-buildpack-middleman,mattwalters/heroku-buildpack-ruby,mrhenry/heroku-buildpack-ruby,meskyanichi/heroku-buildpack-middleman,d-reinhold/cf-buildpack-ruby,ablease/custom-buildpack,gls1/heroku-buildpack-ruby-pdftk-new,orenyk/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,teodor-pripoae/heroku-buildpack-ruby,hone/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,gbenedict/heroku-buildpack-ruby,vhx/heroku-buildpack,hixi/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,aarongray/heroku-buildpack-ruby,jglascoe/heroku-buildpack-ruby-jekyll,ruby/heroku-buildpack-www-ruby-lang,AdStage/heroku-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,blueapron/heroku-buildpack-ruby,nthj/heroku-buildpack-mirror,instacart/heroku-buildpack-ruby,Micka33/heroku-buildpack-ruby-liblua,jeremyvdw/heroku-buildpack-ruby-jekyll,jonasoberschweiber/heroku-buildpack-ruby,mperejda/heroku-buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,jumptvs/BP_Ruby,ibmdb/db2rubybuildpack,Genius/heroku-buildpack-ruby,CPPWind/ruby-buildpack,icelab/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,rowanoulton/heroku-buildpack-ruby,Micka33/heroku-buildpack-ruby-liblua,zidekmat/buildpack-ruby,millie/heroku-buildpack-ruby-with-pdftk,progrium/heroku-buildpack-ruby,atmos/heroku-buildpack-ruby,cloudn/buildpack-ruby,tdenovan/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,andycroll/heroku-buildpack-jekyll,schu/buildpack-testing,sky-uk/help-heroku-buildpack,bskyb-commerce/ruby-buildpack,tenjikinc/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,AdStage/heroku-buildpack-ruby,AdStage/heroku-buildpack-ruby,WilliamDenniss/heroku-buildpack-ruby-imagemagick,space150/heroku-buildpack-ruby,zoomer/heroku-buildpack-ruby-bower,dtao/teeny-buildpack,zunda/heroku-buildpack-ruby,wakermahmud/heroku-buildpack-jekyll,samfrench/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,jcamenisch/heroku-buildpack-rgeo,bskyb-commerce/help-heroku-buildpack,travis-ci/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,jgarber/heroku-buildpack-ruby-octopress,trumaker/heroku-buildpack-turbo-sprockets,jgable/buildpack-ruby-rack-setup-tasks,ericboehs/heroku-buildpack-ruby,Git-Host/prelang-buildpack,stefansundin/heroku-buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,HYPERHYPER/heroku-buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,jasonlevens/heroku-buildpack-ruby,jgarber/heroku-buildpack-ruby-octopress,d-reinhold/cf-buildpack-ruby,electricobjects/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,ericroberts/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,sgnpa/heroku-buildpack-cas,fcruxen/ruby-buildpack,dlorson/gentle-buildpack,nthj/heroku-buildpack-mirror,fgbreel/heroku-buildpack-ruby,firmhouse/heroku-buildpack-ruby-freetds,ilpoldo/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,Git-Host/prelang-buildpack,adaptivelab/heroku-buildpack-adaptivelab-website-2,ablease/custom-buildpack,12spokes/heroku-buildpack-ruby-imagemagick,hausdorff/heroku-buildpack-ruby-jekyll,Altoros/ruby-buildpack,stolt45/heroku-buildpack-ruby-with-sqlite3,trumaker/heroku-buildpack-turbo-sprockets,DyegoCosta/heroku-buildpack-ruby,pietrop/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,travis-ci/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,rhomobile/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,cloudfoundry/ruby-buildpack,samfrench/heroku-buildpack-ruby,scottatron/moc-buildpack,cordata/heroku-buildpack-ruby,jglascoe/heroku-buildpack-ruby-jekyll,swipesense/heroku-buildpack-ruby,cloudn/buildpack-ruby,derrek/heroku-buildpack-ruby,cloudn/buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,Jonty/ruby-buildpack,Jonty/ruby-buildpack,ejholmes/heroku-buildpack-middleman,takii/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,mattwalters/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,pcincalifornia/wdc-heroku-buildpack-middleman,mattmanning/heroku-buildpack-ruby-jekyll,guidance-guarantee-programme/heroku-buildpack-princexml-old,bellycard/heroku-buildpack-ruby,mrhenry/heroku-buildpack-ruby,pkgr/buildpack-ruby-precise-old,Scalingo/ruby-buildpack,space150/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,DigitalInnovation/heroku-buildpack-mslabs,erintherad/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,scottatron/moc-buildpack,heroku/heroku-buildpack-ruby,aarongray/heroku-buildpack-ruby,sstelfox/buildpack-ruby,pietrop/heroku-buildpack-ruby,Numerico/heroku-buildpack-ruby,zidekmat/buildpack-ruby,d-reinhold/cf-buildpack-ruby,millie/heroku-buildpack-ruby-with-pdftk,makifund/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,recursecenter/heroku-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,qstream/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,Altoros/ruby-buildpack,sky-uk/help-heroku-buildpack,hpcloud/heroku-buildpack-ruby,WilliamDenniss/heroku-buildpack-ruby-imagemagick,jasonlevens/heroku-buildpack-ruby,wolfoo2931/heroku-buildpack-ruby-2a352ae,fcruxen/ruby-buildpack,takii/db2rubybuildpack,qnyp/heroku-buildpack-ruby-bower,firmhouse/heroku-buildpack-ruby-freetds,cloudn/buildpack-ruby,dleavitt/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,sgnpa/heroku-buildpack-cas,allomov/fat-free-heroku-buildpack-ruby,sky-uk/ruby-buildpack,hone/heroku-buildpack-ruby,nicholasmott/heroku-buildpack-octopress,0x00evil/heroku-buildpack-ruby,leonardykris/mos-ruby-buildpack,CPPWind/ruby-buildpack,pcincalifornia/wdc-heroku-buildpack-middleman,dlorson/gentle-buildpack,diasks2/heroku-buildpack-mecab,barakav/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,anay/buildpack-ruby-with-oracle-jdk,teodor-pripoae/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,hpcloud/ruby-buildpack,orlando/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,KoanHealth/heroku-buildpack-marvin-setup,mattmanning/heroku-buildpack-ruby-jekyll,bskyb-commerce/ruby-buildpack,gls1/heroku-buildpack-ruby-pdftk-new,centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,icelab/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,jgarber/heroku-buildpack-ruby-octopress,ablease/custom-buildpack,Altoros/ruby-buildpack,rhomobile/heroku-buildpack-ruby,hpcloud/ruby-buildpack,davidjrice/heroku-buildpack-couchbase-ruby,redhotvengeance/heroku-buildpack-deep-thought,dtao/deft-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,DouglasAllen/heroku-buildpack-ruby,rvizza/heroku-buildpack-gsl-ruby,righi/instacart-heroku-buildpack,sky-uk/ruby-buildpack,Jonty/ruby-buildpack,ablease/custom-buildpack,lyoshenka/heroku-buildpack-ruby-jekyll,cmaggard/heroku-buildpack-turbo-sprockets,ekaranto/rails4-bluemix-buildpack,zunda/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,sky-uk/ruby-buildpack,centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,shuber/heroku-buildpack-ruby,ejholmes/heroku-buildpack-middleman,beydogan/ruby-buildpack,musicglue/heroku-buildpack-ruby,dleavitt/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,shuber/heroku-buildpack-ruby,WilliamDenniss/heroku-buildpack-ruby-imagemagick,tdenovan/heroku-buildpack-ruby,jgable/buildpack-ruby-rack-setup-tasks,Numerico/heroku-buildpack-ruby,hixi/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,takii/db2rubybuildpack