Fix ffigen

bin/flatpak.dart

@@ -1,11 +1,23 @@
 import 'dart:ffi';
 import 'package:flatpak/src/libflatpak.dart';
 
-void main() {
-// Load the Flatpak library
-  final DynamicLibrary libFlatpak = DynamicLibrary.open('libflatpak.so');
+class Flatpak {
+  late NativeLibrary libFlatpak;
+
+  Flatpak() {
+    DynamicLibrary libFlatpakLib = DynamicLibrary.open('libflatpak.so');
+    libFlatpak = NativeLibrary(libFlatpakLib);
+  }
 
-  NativeLibrary n = NativeLibrary(libFlatpak);
+  String version() {
+    int major = FLATPAK_MAJOR_VERSION;
+    int minor = FLATPAK_MINOR_VERSION;
+    int micro = FLATPAK_MICRO_VERSION;
+    return '$major.$minor.$micro';
+  }
+}
 
-  print(n.glib_major_version);
+void main() {
+  Flatpak flatpak = Flatpak();
+  print("Flatpak version: ${flatpak.version()}");
 }

gen_bin_archlinux.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+dart run ffigen --compiler-opts "-isystem /usr/lib/clang/17/include/ -isystem /usr/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include/ -I/usr/include/flatpak/"