Warn if you use -XTemplateHaskell in stage1
Warn if you use -XTemplateHaskell in stage1

This should really be an error, but we'll just warn for now

jstolarek/ghc,hferreiro/replay,nkaretnikov/ghc,mfine/ghc,anton-dessiatov/ghc,sdiehl/ghc,nathyong/microghc-ghc,ghc-android/ghc,mettekou/ghc,christiaanb/ghc,hferreiro/replay,oldmanmike/ghc,mettekou/ghc,bitemyapp/ghc,TomMD/ghc,bitemyapp/ghc,acowley/ghc,fmthoma/ghc,ghc-android/ghc,vikraman/ghc,olsner/ghc,christiaanb/ghc,sgillespie/ghc,nkaretnikov/ghc,vikraman/ghc,mettekou/ghc,GaloisInc/halvm-ghc,spacekitteh/smcghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,hferreiro/replay,mcschroeder/ghc,AlexanderPankiv/ghc,gridaphobe/ghc,sgillespie/ghc,gridaphobe/ghc,jstolarek/ghc,nushio3/ghc,nkaretnikov/ghc,gcampax/ghc,snoyberg/ghc,siddhanathan/ghc,oldmanmike/ghc,tjakway/ghcjvm,anton-dessiatov/ghc,frantisekfarka/ghc-dsi,ezyang/ghc,christiaanb/ghc,bitemyapp/ghc,snoyberg/ghc,gcampax/ghc,vTurbine/ghc,AlexanderPankiv/ghc,sgillespie/ghc,lukexi/ghc-7.8-arm64,shlevy/ghc,siddhanathan/ghc,mettekou/ghc,hferreiro/replay,fmthoma/ghc,hferreiro/replay,mcschroeder/ghc,mfine/ghc,gcampax/ghc,fmthoma/ghc,da-x/ghc,olsner/ghc,mcschroeder/ghc,sgillespie/ghc,forked-upstream-packages-for-ghcjs/ghc,acowley/ghc,jstolarek/ghc,vikraman/ghc,ml9951/ghc,gridaphobe/ghc,wxwxwwxxx/ghc,TomMD/ghc,vTurbine/ghc,olsner/ghc,ghc-android/ghc,gcampax/ghc,nushio3/ghc,vTurbine/ghc,ezyang/ghc,nkaretnikov/ghc,elieux/ghc,urbanslug/ghc,wxwxwwxxx/ghc,ezyang/ghc,forked-upstream-packages-for-ghcjs/ghc,spacekitteh/smcghc,mcschroeder/ghc,holzensp/ghc,green-haskell/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,acowley/ghc,snoyberg/ghc,acowley/ghc,lukexi/ghc-7.8-arm64,ml9951/ghc,oldmanmike/ghc,nathyong/microghc-ghc,spacekitteh/smcghc,gridaphobe/ghc,olsner/ghc,jstolarek/ghc,oldmanmike/ghc,da-x/ghc,ghc-android/ghc,nathyong/microghc-ghc,shlevy/ghc,fmthoma/ghc,green-haskell/ghc,urbanslug/ghc,ml9951/ghc,spacekitteh/smcghc,holzensp/ghc,shlevy/ghc,nkaretnikov/ghc,forked-upstream-packages-for-ghcjs/ghc,wxwxwwxxx/ghc,sdiehl/ghc,TomMD/ghc,sdiehl/ghc,lukexi/ghc,mcschroeder/ghc,nushio3/ghc,snoyberg/ghc,shlevy/ghc,tibbe/ghc,hferreiro/replay,ryantm/ghc,vTurbine/ghc,christiaanb/ghc,gridaphobe/ghc,vTurbine/ghc,frantisekfarka/ghc-dsi,green-haskell/ghc,ghc-android/ghc,ezyang/ghc,AlexanderPankiv/ghc,TomMD/ghc,green-haskell/ghc,sgillespie/ghc,holzensp/ghc,tjakway/ghcjvm,mettekou/ghc,holzensp/ghc,spacekitteh/smcghc,lukexi/ghc,urbanslug/ghc,oldmanmike/ghc,GaloisInc/halvm-ghc,holzensp/ghc,lukexi/ghc-7.8-arm64,mfine/ghc,da-x/ghc,frantisekfarka/ghc-dsi,forked-upstream-packages-for-ghcjs/ghc,forked-upstream-packages-for-ghcjs/ghc,mcschroeder/ghc,mcschroeder/ghc,vikraman/ghc,wxwxwwxxx/ghc,nathyong/microghc-ghc,da-x/ghc,sdiehl/ghc,lukexi/ghc,gridaphobe/ghc,frantisekfarka/ghc-dsi,AlexanderPankiv/ghc,elieux/ghc,urbanslug/ghc,christiaanb/ghc,sdiehl/ghc,anton-dessiatov/ghc,da-x/ghc,siddhanathan/ghc,mfine/ghc,green-haskell/ghc,oldmanmike/ghc,GaloisInc/halvm-ghc,fmthoma/ghc,snoyberg/ghc,forked-upstream-packages-for-ghcjs/ghc,ryantm/ghc,bitemyapp/ghc,mettekou/ghc,gcampax/ghc,frantisekfarka/ghc-dsi,sgillespie/ghc,shlevy/ghc,AlexanderPankiv/ghc,siddhanathan/ghc,vikraman/ghc,mfine/ghc,christiaanb/ghc,forked-upstream-packages-for-ghcjs/ghc,tibbe/ghc,vikraman/ghc,elieux/ghc,ezyang/ghc,nathyong/microghc-ghc,tjakway/ghcjvm,urbanslug/ghc,tibbe/ghc,fmthoma/ghc,olsner/ghc,urbanslug/ghc,nkaretnikov/ghc,elieux/ghc,fmthoma/ghc,TomMD/ghc,gcampax/ghc,lukexi/ghc,snoyberg/ghc,nushio3/ghc,nushio3/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,acowley/ghc,da-x/ghc,anton-dessiatov/ghc,acowley/ghc,shlevy/ghc,nushio3/ghc,tjakway/ghcjvm,da-x/ghc,olsner/ghc,vikraman/ghc,tibbe/ghc,ml9951/ghc,nkaretnikov/ghc,nushio3/ghc,ryantm/ghc,anton-dessiatov/ghc,ezyang/ghc,GaloisInc/halvm-ghc,lukexi/ghc-7.8-arm64,sdiehl/ghc,urbanslug/ghc,mfine/ghc,elieux/ghc,siddhanathan/ghc,olsner/ghc,sgillespie/ghc,hferreiro/replay,mfine/ghc,ryantm/ghc,lukexi/ghc-7.8-arm64,wxwxwwxxx/ghc,elieux/ghc,anton-dessiatov/ghc,mettekou/ghc,christiaanb/ghc,lukexi/ghc,wxwxwwxxx/ghc,AlexanderPankiv/ghc,oldmanmike/ghc,tjakway/ghcjvm,tibbe/ghc,GaloisInc/halvm-ghc,ml9951/ghc,ghc-android/ghc,jstolarek/ghc,elieux/ghc,ml9951/ghc,ghc-android/ghc,nathyong/microghc-ghc,anton-dessiatov/ghc,gcampax/ghc,shlevy/ghc,ryantm/ghc,tjakway/ghcjvm,bitemyapp/ghc,sdiehl/ghc,TomMD/ghc,vTurbine/ghc,ml9951/ghc,siddhanathan/ghc,ezyang/ghc,ml9951/ghc,siddhanathan/ghc,nathyong/microghc-ghc,tjakway/ghcjvm,TomMD/ghc,acowley/ghc,snoyberg/ghc