hackage2nix.hs: document limitation of finalizePackageDescription with respect to test suites
hackage2nix.hs: document limitation of finalizePackageDescription with respect to test suites

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