generate-cabal-file.hs: take advantage of cartel 0.14.x
generate-cabal-file.hs: take advantage of cartel 0.14.x

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