Add OpenSUSE Leap CI and fix build (#629)

Author: lenemter

.github/workflows/main.yml

@@ -50,6 +50,26 @@ jobs:
           meson build -Dexample=true
           ninja -C build
           ninja -C build install
+  
+  open-suse-leap:
+    runs-on: ubuntu-latest
+
+    container:
+      image: opensuse/leap:latest
+
+    steps:
+      - name: Install dependencies
+        run: |
+          zypper addrepo https://download.opensuse.org/repositories/X11:Pantheon/15.6/X11:Pantheon.repo
+          zypper --gpg-auto-import-keys refresh
+          zypper --non-interactive install tar git gala-devel libgee-devel gobject-introspection-devel glib2-devel granite6-devel granite-devel gtk3-devel meson vala gcc
+      - uses: actions/checkout@v4
+      - name: Build
+        env:
+          DESTDIR: out
+        run: |
+          meson build
+          ninja -C build install
 
   lint:
     runs-on: ubuntu-latest

meson.build

@@ -36,7 +36,7 @@ x11_dep = dependency('x11')
 gtk_dep = dependency('gtk+-3.0', version: '>=3.10')
 gee_dep = dependency('gee-0.8')
 granite_dep = dependency('granite', version: '>=5.4.0')
-posix_dep = meson.get_compiler('vala').find_library('posix')
+posix_dep = vala.find_library('posix')
 wl_client_dep = dependency('wayland-client')
 
 subdir('protocol')

vapi/libmutter.vapi

@@ -968,7 +968,11 @@ namespace Meta {
 		public Meta.MaximizeFlags get_maximized ();
 		public int get_monitor ();
 		public unowned string? get_mutter_hints ();
+#if VALA_0_56_17
 		public pid_t get_pid ();
+#else
+		public int get_pid ();
+#endif
 		public unowned string get_role ();
 		public unowned string? get_sandboxed_app_id ();
 		public uint get_stable_sequence ();

wingpanel-interface/FocusManager.vala

@@ -128,13 +128,22 @@ public class WingpanelInterface.FocusManager : Object {
                 }
 
                 if (event.get_type () == MOTION || event.get_type () == TOUCH_UPDATE) {
+#if HAS_MUTTER46
                     window.begin_grab_op (
                         Meta.GrabOp.MOVING,
                         event.get_device (),
                         event.get_event_sequence (),
                         event.get_time (),
                         { x, y }
                     );
+#else
+                    window.begin_grab_op (
+                        Meta.GrabOp.MOVING,
+                        event.get_device (),
+                        event.get_event_sequence (),
+                        event.get_time ()
+                    );
+#endif
                 }
 
                 wm.pop_modal (proxy);

wingpanel-interface/meson.build

@@ -53,6 +53,10 @@ if mutter_dep.length() == 0
 	error ('No supported mutter library found!')
 endif
 
+if vala.version().version_compare('>= 0.56.17')
+    vala_flags += ['--define', 'VALA_0_56_17']
+endif
+
 mutter_typelib_dir = libmutter_dep.get_variable('typelibdir')
 
 gala_dep = dependency('gala')