Hackage4Nix.hs: removed obsolete pkgset from Configuration
Hackage4Nix.hs: removed obsolete pkgset from Configuration

gridaphobe/cabal2nix,jb55/cabal2nix,Fuuzetsu/cabal2nix,psibi/cabal2nix,spencerjanssen/cabal2nix,bennofs/cabal2nix,dmalikov/cabal2nix