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flake.nix

@@ -1,49 +1,19 @@
-{ inputs = {
-    flake-utils.url = "github:numtide/flake-utils/v1.0.0";
-
+{
+  inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/25.11";
   };
 
-  outputs = { flake-utils, nixpkgs, ... }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = nixpkgs.legacyPackages."${system}";
+  outputs =
+    { self, nixpkgs }:
+    {
+      packages.x86_64-linux.default =
+        (nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
 
-        base = { lib, modulesPath, ... }: {
-          imports = [ "${modulesPath}/virtualisation/qemu-vm.nix" ];
-
-          # https://github.com/utmapp/UTM/issues/2353
-          networking.nameservers = lib.mkIf pkgs.stdenv.isDarwin [ "8.8.8.8" ];
-
-          virtualisation = {
-            graphics = false;
-
-            host = { inherit pkgs; };
-          };
-        };
-
-        machine = nixpkgs.lib.nixosSystem {
-          system = builtins.replaceStrings [ "darwin" ] [ "linux" ] system;
-
-          modules = [ base ./module.nix ];
-        };
-
-        program = pkgs.writeShellScript "run-vm.sh" ''
-          export NIX_DISK_IMAGE=$(mktemp -u -t nixos.qcow2)
-
-          trap "rm -f $NIX_DISK_IMAGE" EXIT
-
-          ${machine.config.system.build.vm}/bin/run-nixos-vm
-        '';
-
-      in
-        { packages = { inherit machine; };
-
-          apps.default = {
-            type = "app";
-
-            program = "${program}";
-          };
-        }
-    );
+          modules = [
+            "${nixpkgs}/nixos/modules/virtualisation/qemu-vm.nix"
+            ./module.nix
+          ];
+        }).config.system.build.vm;
+    };
 }