Don't warn if 'import Prelude' doesn't import anything ... even if Prelude doesn't come from the base package (it might come from a old backwards-compatible version of base, for example).
Don't warn if 'import Prelude' doesn't import anything
... even if Prelude doesn't come from the base package (it might come from
a old backwards-compatible version of base, for example).

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