changing to use flag instead of writing file for using mirrors
changing to use flag instead of writing file for using mirrors

Gliimpse/heroku-buildpack-SWIG-python,benmurden/heroku-buildpack-python-ember,tukutela/heroku-buildpack-python,pkumar-appd/python-buildpack,evnpr/herokupython,jms6520/cf-python,everysignalinc/heroku-buildpack-python-scikit-learn-git,mfenniak/heroku-buildpack-python-libffi,samuelhavron/heroku-buildpack-python,mdz/heroku-buildpack-python,lyft/heroku-buildpack-python-data,jbenet/heroku-buildpack-python,amanjain/heroku-buildpack-python-with-django-bower,ekkleesia2/heroku-buildpack-python,projetoeureka/heroku-buildpack-scipy,film42/heroku-buildpack-python-wkhtmltopdf,alexflanagan/operand-buildpack-python,boardman/sphinx-buildpack,jbenet/heroku-buildpack-python,gitricko/apt-python-buildpack,soapril/heroku-buildpack-python,incuna/heroku-buildpack-python-test,wyn/heroku-buildpack-python,liyanchang/buildbot-master-buildpack,ianyh/heroku-buildpack-python-bower,apiaryio/heroku-buildpack-python-scons,dulaccc/heroku-buildpack-geodjango,Nazanin84/python-buildpack,aldryn/heroku-buildpack-python,jbenet/heroku-buildpack-python,jvenezia/heroku-buildpack-python,mdz/heroku-buildpack-python,drinks/heroku-buildpack-python-base,joshisa/python-buildpack,osharim/-heroku-buildpack-python,rapilabs/heroku-buildpack-python,davidcbucher/heroku-buildpack-geo-python,predata/heroku-buildpack-scipy,skilljar/heroku-buildpack-python,AltSchool/heroku-buildpack-python,arnfred/heroku-buildpack-python-hdf5-blas-lapack,davidcbucher/heroku-buildpack-geo-python,bolster/heroku-buildpack-bolster,WonderThink/heroku-buildpack-python-ffmpeg-geoip,pkumar-appd/python-buildpack,sookasa/heroku-buildpack-python-pipeline,mtigas/heroku-buildpack-pypy,cortexintel/heroku-buildpack-scipy,kikin81/heroku-buildpack,samuelhavron/heroku-buildpack-python,vlidholt/heroku-buildpack-scipy,arnfred/heroku-buildpack-python-hdf5-blas-lapack,buildingenergy/heroku-buildpack-python-leatherman,wyn/heroku-buildpack-python,chalkchisel/heroku-buildpack-bolster,craigkerstiens/gistlog,thenovices/heroku-buildpack-scipy,jms6520/cf-python,Apogaea/heroku-buildpack-python,osharim/-heroku-buildpack-python,julienbou/heroku-buildpack-serpan,kvarga/heroku-buildpack-python,kennethjiang/heroku-buildpack-python-libffi,mfenniak/heroku-buildpack-python-libffi,ephemerallabs/heroku-buildpack-python,HousekeepLtd/heroku-buildpack-python,HanSooloo/heroku-buildpack-python,benslavin/heroku-buildpack-python,dbrgn/heroku-npscipy,samuelhavron/heroku-buildpack-python,maxcountryman/heroku-buildpack-python,integricho/heroku-buildpack-python-ffmpeg-lame,evnpr/herokupython,cirlabs/heroku-buildpack-geodjango,mdz/heroku-buildpack-python,heroku/heroku-buildpack-python,YoApp/heroku-buildpack-python-twemproxy,Gliimpse/heroku-buildpack-SWIG-python,bolster/heroku-buildpack-bolster,RobertSundling/heroku-buildpack-python-nginx,Nazanin84/python-buildpack,ianyh/heroku-buildpack-python-nodejs,ianyh/heroku-buildpack-python-nodejs,blazekadam/opencv,ghhong1986/crfpp-python-buildpack-for-heroku,slorg1/heroku-buildpack-python,orablu/heroku-buildpack,alexluke/heroku-buildpack-python-extras,Scalingo/python-buildpack,cirlabs/heroku-buildpack-geodjango,nikita-pivovarov/heroku-buildpack-python-ldap,rajpurkar/heroku-buildpack-python-sklearn,benmurden/heroku-buildpack-python-ember,jiaaro/heroku-buildpack-django,dbrgn/heroku-npscipy,manufacturedba/heroku-buildpack-python,icoxfog417/heroku-buildpack-python,davidcbucher/heroku-buildpack-geo-python,drinks/heroku-buildpack-python-scipy,doda/heroku-buildpack-python,grivescorbett/heroku-buildpack-python,liyanchang/cloudfoundary-buildbot-buildpack,cloudfoundry/python-buildpack,jimlindeman/python-buildpack-collectd,loanzen/heroku-buildpack-python,apiaryio/heroku-buildpack-python-scons,samuelhavron/heroku-buildpack-python,Nazanin84/python-buildpack,film42/heroku-buildpack-python-wkhtmltopdf,mjumbewu/heroku-buildpack-python-no-node,lyft/heroku-buildpack-python-data,andrespires/python-buildpack,jms6520/cf-python,marcospy/heroku-buildpack-scipy,davidcbucher/heroku-buildpack-geo-python,jamarparris/heroku-buildpack-python-swig,localmed/heroku-buildpack-python-extras,incuna/heroku-buildpack-python-test,samuelhavron/heroku-buildpack-python,dbrgn/heroku-npscipy,TipWander/heroku-buildpack-geodjango,benslavin/heroku-buildpack-python,uniphil/heroku-buildpack-pythonsass,AltSchool/heroku-buildpack-python,cloudfoundry/python-buildpack,guidowb/buildpack-python,kowito/python-buildpack,kowito/python-buildpack,rawWhipIT/p22-goldant-buildpack,lucasvo/heroku-buildpack-python-with-node,lucasvo/heroku-buildpack-python-with-node,galuszkak/heroku-buildpack-django,chalkchisel/heroku-buildpack-bolster,econchick/heroku-buildpack-python,blazekadam/opencv,rajpurkar/heroku-buildpack-python-sklearn,jimlindeman/python-buildpack-collectd,nadirizr/heroku-buildpack-python-gulp,scrapinghub/scrapinghub-buildpack-scrapy,ruscoder/heroku-buildpack-python,uniphil/heroku-buildpack-pythonsass,orablu/heroku-buildpack,galuszkak/heroku-buildpack-django,igroff/heroku-buildpack-python,alexflanagan/operand-buildpack-python,codeforamerica/heroku-buildpack-pygeo,jiaaro/heroku-buildpack-django,guidowb/buildpack-python,wbrefvem/heroku-buildpack-python,pkumar-appd/python-buildpack,gitricko/apt-python-buildpack,psrthegreat/heroku-buildpack-python-sklearn,ywarezk/heroku-buildpack-geodjango,cirlabs/heroku-buildpack-geodjango,snapist/heroku-buildpack-python-opencv,kikin81/heroku-buildpack,18F/python-buildpack,zakdoek/heroku-buildpack-django,everysignalinc/heroku-buildpack-python-scikit-learn-git,dbrgn/heroku-buildpack-python-sklearn,snapist/heroku-buildpack-python-opencv,drinks/heroku-buildpack-python-base,joshisa/python-buildpack,marcospy/hackathon-globo-app,Gliimpse/heroku-buildpack-SWIG-python,DylanLukes/heroku-buildpack-python,joshowen/heroku-buildpack-python,cdht/heroku-buildpack-python,rawWhipIT/p22-goldant-buildpack,drinks/heroku-buildpack-python-scipy,rbtying/heroku-buildpack-python,edmorley/heroku-buildpack-python,benslavin/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,orablu/heroku-buildpack,wbrefvem/heroku-buildpack-python,smalleats/heroku-buildpack-python,ryanhiebert/heroku-buildpack-python,Brogency/heroku-buildpack-python-gulp,ghhong1986/crfpp-python-buildpack-for-heroku,ianyh/heroku-buildpack-python-extras,Tiger66639/buildbot-master-buildpack,brianthomas/heroku-buildpack-textmining,river-jade/heroku-buildpack-scipy,kennethjiang/heroku-buildpack-python-libffi,SciDevs/heroku-buildpack-python-scikit-learn-git,everysignalinc/heroku-buildpack-python-scikit-learn-git,ianyh/heroku-buildpack-python-extras,kikin81/heroku-buildpack,SciDevs/heroku-buildpack-python-scikit-learn-git,codeforamerica/heroku-buildpack-pygeo,drinks/heroku-buildpack-python-base,18F/python-buildpack,alexluke/heroku-buildpack-python-extras,legnaleurc/heroku-buildpack-python,aldryn/heroku-buildpack-python,ianyh/heroku-buildpack-python-opencv,drinks/heroku-buildpack-python-scipy,wyn/heroku-buildpack-python,craigkerstiens/gistlog,dbrgn/heroku-buildpack-python-sklearn,andela-brotich/wger-buildpack-python,orablu/heroku-buildpack,bobsilverberg/heroku-buildpack-python-peep,apiaryio/heroku-buildpack-python-scons,nemesiscodex/heroku-buildpack-python,marcospy/hackathon-globo-app,dbrgn/heroku-buildpack-python-sklearn,martingascon/heroku-buildpack-python,incuna/heroku-buildpack-python-test,mjumbewu/heroku-buildpack-python-no-node,mjumbewu/heroku-buildpack-python-no-node,arnfred/heroku-buildpack-python-hdf5-blas-lapack,edenspiekermann-amsterdam/heroku-buildpack-python,gitricko/apt-python-buildpack,18F/python-buildpack,psrthegreat/heroku-buildpack-python-sklearn,sookasa/heroku-buildpack-python-pipeline,econchick/heroku-buildpack-python,julienbou/heroku-buildpack-serpan,zakdoek/heroku-buildpack-django,sookasa/heroku-buildpack-python-pipeline,sjtuadamyang/adamyang-buildpack-python-libjpeg,legnaleurc/heroku-buildpack-python,jms6520/cf-python,marcospy/hackathon-globo-app,benjaminfox/heroku-buildpack-python-geoip,andrespires/python-buildpack,dvreed/heroku-buildpack-python-ldap,ad-m/heroku-buildpack-python,drinks/heroku-buildpack-python-base,brightforme/heroku-buildpack-python,buildbot/buildbot-master-buildpack,heroku/heroku-buildpack-python,Scalingo/python-buildpack,dubsmash/heroku-buildpack-python,cloudControl/buildpack-python,guidowb/buildpack-python,ianyh/heroku-buildpack-python-extras,ianyh/heroku-buildpack-python-opencv,benjaminfox/heroku-buildpack-python-geoip,lyft/heroku-buildpack-python-data,doda/heroku-buildpack-python,mtigas/heroku-buildpack-pypy,integricho/heroku-buildpack-python-ffmpeg-lame,uniphil/heroku-buildpack-pythonsass,pmclanahan/heroku-buildpack-python-peep,SciDevs/heroku-buildpack-python-scikit-learn-git,mfenniak/heroku-buildpack-python-libffi,rollokb/heroku-buildpack-python,buildingenergy/heroku-buildpack-python-leatherman,ad-m/heroku-buildpack-python,pwdel1/heroku-buildpack-scipy,osharim/-heroku-buildpack-python,Stibbons/heroku-buildpack-python-installer,ruscoder/heroku-buildpack-python-with-node,evnpr/herokupython,tukutela/heroku-buildpack-python,evnpr/herokupython,oberlin/heroku-buildpack-python,lucasvo/heroku-buildpack-python-with-node,marianzange/heroku-buildpack-python,nicktimko/heroku-buildpack-scipy,galuszkak/heroku-buildpack-django,joshfriend/heroku-buildpack-python,tommyvn/heroku-buildpack-python,minichate/heroku-buildpack-ldap,PerceptumNL/heroku-buildpack-python,rawWhipIT/p22-goldant-buildpack,Mause/heroku-buildpack-python,ianyh/heroku-buildpack-python-nodejs,rajpurkar/heroku-buildpack-python-sklearn,kennethreitz/sphinx-buildpack,hsr-ba-fs15-dat/heroku-buildpack,ruscoder/heroku-buildpack-python-with-node,craigkerstiens/gistlog,buildingenergy/heroku-buildpack-python-leatherman,econchick/heroku-buildpack-python,minichate/heroku-buildpack-ldap,maciejgryka/heroku-buildpack-spcedge,jbenet/heroku-buildpack-python,stalnacke/heroku-buildpack-python,monological/heroku-buildpack-python-opencv,xica/heroku-buildpack-scipy,arnaudlimbourg/heroku-buildpack-python,mobify/heroku-buildpack-python-swig,liyanchang/cloudfoundary-buildbot-buildpack,mythmon/heroku-buildpack-python-nodejs,junyoed/heroku-buildpack-python,resmio/heroku-buildpack-geodjango,beni55/heroku-buildpack-python,localmed/heroku-buildpack-python-extras,miraculixx/heroku-buildpack-python,andrespires/python-buildpack,ojacobson/heroku-buildpack-python,ianyh/heroku-buildpack-python-opencv,nwkotto/geodjango-buildpack-with-geos,integricho/heroku-buildpack-python-ffmpeg2.1-with-codecs,aldryn/heroku-buildpack-python,cclauss/heroku-buildpack-python,papaeye/heroku-buildpack-python-bower,driftyco/heroku-buildpack-sphinx,markine/heroku-buildpack-python,liyanchang/cloudfoundary-buildbot-buildpack,kikin81/heroku-buildpack,psrthegreat/heroku-buildpack-python-sklearn,plangrid/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,localmed/heroku-buildpack-python-extras,pebble/cloudpebble-buildpack,econchick/heroku-buildpack-python,craigkerstiens/gistlog,cloudfoundry/python-buildpack,blazekadam/open2,legnaleurc/heroku-buildpack-python,gaumire/heroku-buildpack-python,agriffis/heroku-buildpack-python,kennethjiang/heroku-buildpack-python-libffi,jimlindeman/python-buildpack-collectd,joshisa/python-buildpack,drinks/heroku-buildpack-python-scipy,integricho/heroku-buildpack-python-ffmpeg-lame,kowito/python-buildpack,swanson/heroku-buildpack-python-ortools,adamroth/heroku-buildpack-python-pdftk,samuelhavron/heroku-buildpack-python,film42/heroku-buildpack-python-wkhtmltopdf,swils/heroku-buildpack-python,lukaszkorecki/heroku-buildpack-python