Make ghc-pkg print less on error.
Make ghc-pkg print less on error.

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