Remove many, many post-process hooks which aren't necessary any more in the NG architecture.
Remove many, many post-process hooks which aren't necessary any more in the NG architecture.

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