migrate to flake part

example/flake.nix

@@ -0,0 +1,33 @@
+{
+  description = "Usage example";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-root.url = "github:srid/flake-root";
+    # replace with "github:voleum-org/deno-with-packages"
+    deno-with-packages.url = "path:../";
+  };
+
+  outputs = inputs@{ flake-parts, flake-root, deno-with-packages, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [
+        flake-root.flakeModule
+        deno-with-packages.flakeModule
+      ];
+
+      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+
+      perSystem = { config, pkgs, ... }: {
+        deno = {
+          enable = true;
+          lockfiles = [ ./deno.lock ];
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = [ config.flake-root.devShell ];
+          buildInputs = [ config.packages.deno ];
+        };
+      };
+    };
+}