only talk about runtime once
only talk about runtime once

HousekeepLtd/heroku-buildpack-python,zakdoek/heroku-buildpack-django,orablu/heroku-buildpack,codeforamerica/heroku-buildpack-pygeo,evnpr/herokupython,pkumar-appd/python-buildpack,psrthegreat/heroku-buildpack-python-sklearn,Scalingo/python-buildpack,samuelhavron/heroku-buildpack-python,cdht/heroku-buildpack-python,buildbot/buildbot-master-buildpack,Nazanin84/python-buildpack,kennethjiang/heroku-buildpack-python-libffi,junyoed/heroku-buildpack-python,edenspiekermann-amsterdam/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,rawWhipIT/p22-goldant-buildpack,arnaudlimbourg/heroku-buildpack-python,gitricko/apt-python-buildpack,Nazanin84/python-buildpack,Apogaea/heroku-buildpack-python,adamroth/heroku-buildpack-python-pdftk,kikin81/heroku-buildpack,ianyh/heroku-buildpack-python-opencv,samuelhavron/heroku-buildpack-python,edmorley/heroku-buildpack-python,aldryn/heroku-buildpack-python,jamarparris/heroku-buildpack-python-swig,river-jade/heroku-buildpack-scipy,scrapinghub/scrapinghub-buildpack-scrapy,xica/heroku-buildpack-scipy,julienbou/heroku-buildpack-serpan,orablu/heroku-buildpack,psrthegreat/heroku-buildpack-python-sklearn,kennethjiang/heroku-buildpack-python-libffi,SciDevs/heroku-buildpack-python-scikit-learn-git,papaeye/heroku-buildpack-python-bower,legnaleurc/heroku-buildpack-python,ywarezk/heroku-buildpack-geodjango,aldryn/heroku-buildpack-python,WonderThink/heroku-buildpack-python-ffmpeg-geoip,uniphil/heroku-buildpack-pythonsass,sookasa/heroku-buildpack-python-pipeline,manufacturedba/heroku-buildpack-python,arnfred/heroku-buildpack-python-hdf5-blas-lapack,dbrgn/heroku-buildpack-python-sklearn,arnfred/heroku-buildpack-python-hdf5-blas-lapack,swanson/heroku-buildpack-python-ortools,kikin81/heroku-buildpack,mythmon/heroku-buildpack-python-nodejs,projetoeureka/heroku-buildpack-scipy,igroff/heroku-buildpack-python,benjaminfox/heroku-buildpack-python-geoip,skilljar/heroku-buildpack-python,rajpurkar/heroku-buildpack-python-sklearn,resmio/heroku-buildpack-geodjango,jbenet/heroku-buildpack-python,integricho/heroku-buildpack-python-ffmpeg-lame,kikin81/heroku-buildpack,andela-brotich/wger-buildpack-python,18F/python-buildpack,integricho/heroku-buildpack-python-ffmpeg-lame,plangrid/heroku-buildpack-python,econchick/heroku-buildpack-python,RobertSundling/heroku-buildpack-python-nginx,lyft/heroku-buildpack-python-data,stalnacke/heroku-buildpack-python,agriffis/heroku-buildpack-python,wbrefvem/heroku-buildpack-python,andrespires/python-buildpack,ianyh/heroku-buildpack-python-nodejs,benjaminfox/heroku-buildpack-python-geoip,ryanhiebert/heroku-buildpack-python,smalleats/heroku-buildpack-python,jms6520/cf-python,predata/heroku-buildpack-scipy,rollokb/heroku-buildpack-python,benmurden/heroku-buildpack-python-ember,tukutela/heroku-buildpack-python,Gliimpse/heroku-buildpack-SWIG-python,nicktimko/heroku-buildpack-scipy,everysignalinc/heroku-buildpack-python-scikit-learn-git,uniphil/heroku-buildpack-pythonsass,jbenet/heroku-buildpack-python,jbenet/heroku-buildpack-python,mobify/heroku-buildpack-python-swig,mfenniak/heroku-buildpack-python-libffi,slorg1/heroku-buildpack-python,18F/python-buildpack,marianzange/heroku-buildpack-python,ojacobson/heroku-buildpack-python,integricho/heroku-buildpack-python-ffmpeg2.1-with-codecs,liyanchang/cloudfoundary-buildbot-buildpack,benmurden/heroku-buildpack-python-ember,film42/heroku-buildpack-python-wkhtmltopdf,Mause/heroku-buildpack-python,kowito/python-buildpack,gaumire/heroku-buildpack-python,AltSchool/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,thenovices/heroku-buildpack-scipy,PerceptumNL/heroku-buildpack-python,beni55/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,alexflanagan/operand-buildpack-python,ianyh/heroku-buildpack-python-opencv,econchick/heroku-buildpack-python,grivescorbett/heroku-buildpack-python,davidcbucher/heroku-buildpack-geo-python,psrthegreat/heroku-buildpack-python-sklearn,integricho/heroku-buildpack-python-ffmpeg-lame,osharim/-heroku-buildpack-python,davidcbucher/heroku-buildpack-geo-python,tukutela/heroku-buildpack-python,drinks/heroku-buildpack-python-scipy,evnpr/herokupython,cortexintel/heroku-buildpack-scipy,heroku/heroku-buildpack-python,doda/heroku-buildpack-python,TipWander/heroku-buildpack-geodjango,joshisa/python-buildpack,maxcountryman/heroku-buildpack-python,jms6520/cf-python,marcospy/hackathon-globo-app,kikin81/heroku-buildpack,liyanchang/cloudfoundary-buildbot-buildpack,lyft/heroku-buildpack-python-data,pkumar-appd/python-buildpack,jimlindeman/python-buildpack-collectd,DylanLukes/heroku-buildpack-python,liyanchang/cloudfoundary-buildbot-buildpack,codeforamerica/heroku-buildpack-pygeo,cirlabs/heroku-buildpack-geodjango,rawWhipIT/p22-goldant-buildpack,marcospy/heroku-buildpack-scipy,Brogency/heroku-buildpack-python-gulp,kvarga/heroku-buildpack-python,marcospy/hackathon-globo-app,apiaryio/heroku-buildpack-python-scons,oberlin/heroku-buildpack-python,joshowen/heroku-buildpack-python,blazekadam/open2,dbrgn/heroku-buildpack-python-sklearn,osharim/-heroku-buildpack-python,cclauss/heroku-buildpack-python,jbenet/heroku-buildpack-python,YoApp/heroku-buildpack-python-twemproxy,ianyh/heroku-buildpack-python-nodejs,andrespires/python-buildpack,dvreed/heroku-buildpack-python-ldap,ianyh/heroku-buildpack-python-nodejs,miraculixx/heroku-buildpack-python,julienbou/heroku-buildpack-serpan,doda/heroku-buildpack-python,sookasa/heroku-buildpack-python-pipeline,zakdoek/heroku-buildpack-django,film42/heroku-buildpack-python-wkhtmltopdf,legnaleurc/heroku-buildpack-python,ruscoder/heroku-buildpack-python,cloudControl/buildpack-python,jms6520/cf-python,lyft/heroku-buildpack-python-data,drinks/heroku-buildpack-python-scipy,nadirizr/heroku-buildpack-python-gulp,samuelhavron/heroku-buildpack-python,rawWhipIT/p22-goldant-buildpack,evnpr/herokupython,cloudfoundry/python-buildpack,liyanchang/buildbot-master-buildpack,uniphil/heroku-buildpack-pythonsass,ad-m/heroku-buildpack-python,heroku/heroku-buildpack-python,nwkotto/geodjango-buildpack-with-geos,kowito/python-buildpack,AltSchool/heroku-buildpack-python,sookasa/heroku-buildpack-python-pipeline,cloudfoundry/python-buildpack,everysignalinc/heroku-buildpack-python-scikit-learn-git,Gliimpse/heroku-buildpack-SWIG-python,davidcbucher/heroku-buildpack-geo-python,pwdel1/heroku-buildpack-scipy,monological/heroku-buildpack-python-opencv,SciDevs/heroku-buildpack-python-scikit-learn-git,ianyh/heroku-buildpack-python-opencv,nikita-pivovarov/heroku-buildpack-python-ldap,ianyh/heroku-buildpack-python-bower,jvenezia/heroku-buildpack-python,soapril/heroku-buildpack-python,joshisa/python-buildpack,cloudfoundry/python-buildpack,ad-m/heroku-buildpack-python,cirlabs/heroku-buildpack-geodjango,Stibbons/heroku-buildpack-python-installer,rajpurkar/heroku-buildpack-python-sklearn,jimlindeman/python-buildpack-collectd,evnpr/herokupython,kowito/python-buildpack,Tiger66639/buildbot-master-buildpack,econchick/heroku-buildpack-python,18F/python-buildpack,rapilabs/heroku-buildpack-python,cirlabs/heroku-buildpack-geodjango,davidcbucher/heroku-buildpack-geo-python,kennethjiang/heroku-buildpack-python-libffi,Gliimpse/heroku-buildpack-SWIG-python,gitricko/apt-python-buildpack,SciDevs/heroku-buildpack-python-scikit-learn-git,pmclanahan/heroku-buildpack-python-peep,hsr-ba-fs15-dat/heroku-buildpack,dbrgn/heroku-npscipy,osharim/-heroku-buildpack-python,jms6520/cf-python,gitricko/apt-python-buildpack,dbrgn/heroku-buildpack-python-sklearn,dbrgn/heroku-npscipy,apiaryio/heroku-buildpack-python-scons,vlidholt/heroku-buildpack-scipy,arnfred/heroku-buildpack-python-hdf5-blas-lapack,joshisa/python-buildpack,pkumar-appd/python-buildpack,HanSooloo/heroku-buildpack-python,rajpurkar/heroku-buildpack-python-sklearn,sjtuadamyang/adamyang-buildpack-python-libjpeg,guidowb/buildpack-python,alexflanagan/operand-buildpack-python,amanjain/heroku-buildpack-python-with-django-bower,samuelhavron/heroku-buildpack-python,guidowb/buildpack-python,brightforme/heroku-buildpack-python,film42/heroku-buildpack-python-wkhtmltopdf,dulaccc/heroku-buildpack-geodjango,Nazanin84/python-buildpack,wbrefvem/heroku-buildpack-python,lukaszkorecki/heroku-buildpack-python,drinks/heroku-buildpack-python-scipy,everysignalinc/heroku-buildpack-python-scikit-learn-git,drinks/heroku-buildpack-python-scipy,ekkleesia2/heroku-buildpack-python,apiaryio/heroku-buildpack-python-scons,guidowb/buildpack-python,aldryn/heroku-buildpack-python,dubsmash/heroku-buildpack-python,andrespires/python-buildpack,jimlindeman/python-buildpack-collectd,nemesiscodex/heroku-buildpack-python,brianthomas/heroku-buildpack-textmining,tommyvn/heroku-buildpack-python,dbrgn/heroku-npscipy,orablu/heroku-buildpack,loanzen/heroku-buildpack-python,markine/heroku-buildpack-python,marcospy/hackathon-globo-app,orablu/heroku-buildpack,legnaleurc/heroku-buildpack-python,econchick/heroku-buildpack-python,rbtying/heroku-buildpack-python,swils/heroku-buildpack-python,maciejgryka/heroku-buildpack-spcedge,driftyco/heroku-buildpack-sphinx,martingascon/heroku-buildpack-python,ephemerallabs/heroku-buildpack-python,icoxfog417/heroku-buildpack-python,mfenniak/heroku-buildpack-python-libffi,joshfriend/heroku-buildpack-python,bobsilverberg/heroku-buildpack-python-peep,samuelhavron/heroku-buildpack-python,Scalingo/python-buildpack,pebble/cloudpebble-buildpack,mfenniak/heroku-buildpack-python-libffi