Using typst as 3rd party flake in devshell

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "Basic flake with typst as input";
+  description = "Using typst as 3rd party flake in devshell";
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";
@@ -10,13 +10,14 @@
      flake-utils.lib.eachDefaultSystem (system:
        let
          pkgs = nixpkgs.legacyPackages.${system};
+         typst = typst-pkg.packages.${system}.default;
        in
        {
          packages = {
           default = pkgs.hello;
          };
          devShells.default = pkgs.mkShell {
-            buildInputs = with pkgs; [deno];
+            buildInputs = with pkgs; [deno typst];
          };
        }
      );