Don't update th-orphans to 0.12.x to avoid breaking haskell-src-meta.
Don't update th-orphans to 0.12.x to avoid breaking haskell-src-meta.

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