23 files changed, 45 insertions, 201 deletions
diff --git a/configure.ac b/configure.ac
index fc1e74a..185cb2c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -126,7 +126,7 @@ if test x$GPERF != xno ; then
 fi
 AM_CONDITIONAL(HAVE_GPERF, [test x$GPERF != xno])
 
-PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16.1 gio-2.0 gobject-2.0 gthread-2.0 gio-unix-2.0 gmodule-2.0)
+PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.44.0 gio-2.0 gobject-2.0 gthread-2.0 gio-unix-2.0 gmodule-2.0)
 PKG_CHECK_MODULES(LIBARCHIVE, libarchive)
 PKG_CHECK_MODULES(SOUP, libsoup-2.4 >= 2.24)
 PKG_CHECK_MODULES(GDKPIXBUF, gdk-pixbuf-2.0 >= 2.14)
diff --git a/libappstream-glib/as-app.c b/libappstream-glib/as-app.c
index eee6ef5..4f5495a 100644
--- a/libappstream-glib/as-app.c
+++ b/libappstream-glib/as-app.c
@@ -49,8 +49,7 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsAppPrivate	AsAppPrivate;
-struct _AsAppPrivate
+typedef struct
 {
 	AsAppProblems	 problems;
 	AsIconKind	 icon_kind;
@@ -94,7 +93,7 @@ struct _AsAppPrivate
 	gint		 priority;
 	gsize		 token_cache_valid;
 	GPtrArray	*token_cache;			/* of AsAppTokenItem */
-};
+} AsAppPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsApp, as_app, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-app.h b/libappstream-glib/as-app.h
index 4ee5d48..fb7d366 100644
--- a/libappstream-glib/as-app.h
+++ b/libappstream-glib/as-app.h
@@ -35,22 +35,10 @@
 #include "as-release.h"
 #include "as-screenshot.h"
 
-#define AS_TYPE_APP		(as_app_get_type())
-#define AS_APP(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_APP, AsApp))
-#define AS_APP_CLASS(cls)	(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_APP, AsAppClass))
-#define AS_IS_APP(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_APP))
-#define AS_IS_APP_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_APP))
-#define AS_APP_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_APP, AsAppClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsApp		AsApp;
-typedef struct _AsAppClass	AsAppClass;
-
-struct _AsApp
-{
-	GObject			parent;
-};
+#define AS_TYPE_APP (as_app_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsApp, as_app, AS, APP, GObject)
 
 struct _AsAppClass
 {
@@ -210,7 +198,6 @@ typedef enum {
 
 #define	AS_APP_ERROR				as_app_error_quark ()
 
-GType		 as_app_get_type		(void);
 AsApp		*as_app_new			(void);
 GQuark		 as_app_error_quark		(void);
 AsAppSourceKind	 as_app_guess_source_kind	(const gchar	*filename);
diff --git a/libappstream-glib/as-bundle.c b/libappstream-glib/as-bundle.c
index 4a02975..7bd0180 100644
--- a/libappstream-glib/as-bundle.c
+++ b/libappstream-glib/as-bundle.c
@@ -40,12 +40,11 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsBundlePrivate	AsBundlePrivate;
-struct _AsBundlePrivate
+typedef struct
 {
 	AsBundleKind		 kind;
 	gchar			*id;
-};
+} AsBundlePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsBundle, as_bundle, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-bundle.h b/libappstream-glib/as-bundle.h
index 0a000e2..d98892d 100644
--- a/libappstream-glib/as-bundle.h
+++ b/libappstream-glib/as-bundle.h
@@ -28,22 +28,10 @@
 
 #include <glib-object.h>
 
-#define AS_TYPE_BUNDLE			(as_bundle_get_type())
-#define AS_BUNDLE(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_BUNDLE, AsBundle))
-#define AS_BUNDLE_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_BUNDLE, AsBundleClass))
-#define AS_IS_BUNDLE(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_BUNDLE))
-#define AS_IS_BUNDLE_CLASS(cls)		(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_BUNDLE))
-#define AS_BUNDLE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_BUNDLE, AsBundleClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsBundle		AsBundle;
-typedef struct _AsBundleClass	AsBundleClass;
-
-struct _AsBundle
-{
-	GObject			parent;
-};
+#define AS_TYPE_BUNDLE (as_bundle_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsBundle, as_bundle, AS, BUNDLE, GObject)
 
 struct _AsBundleClass
 {
@@ -75,7 +63,6 @@ typedef enum {
 	AS_BUNDLE_KIND_LAST
 } AsBundleKind;
 
-GType		 as_bundle_get_type		(void);
 AsBundle	*as_bundle_new			(void);
 
 /* helpers */
diff --git a/libappstream-glib/as-checksum.c b/libappstream-glib/as-checksum.c
index 52215ea..27d6da0 100644
--- a/libappstream-glib/as-checksum.c
+++ b/libappstream-glib/as-checksum.c
@@ -38,14 +38,13 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsChecksumPrivate	AsChecksumPrivate;
-struct _AsChecksumPrivate
+typedef struct
 {
 	AsChecksumTarget	 target;
 	GChecksumType		 kind;
 	gchar			*filename;
 	gchar			*value;
-};
+} AsChecksumPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsChecksum, as_checksum, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-checksum.h b/libappstream-glib/as-checksum.h
index 485ae6b..929927f 100644
--- a/libappstream-glib/as-checksum.h
+++ b/libappstream-glib/as-checksum.h
@@ -28,22 +28,10 @@
 
 #include <glib-object.h>
 
-#define AS_TYPE_CHECKSUM		(as_checksum_get_type())
-#define AS_CHECKSUM(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_CHECKSUM, AsChecksum))
-#define AS_CHECKSUM_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_CHECKSUM, AsChecksumClass))
-#define AS_IS_CHECKSUM(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_CHECKSUM))
-#define AS_IS_CHECKSUM_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_CHECKSUM))
-#define AS_CHECKSUM_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_CHECKSUM, AsChecksumClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsChecksum	AsChecksum;
-typedef struct _AsChecksumClass	AsChecksumClass;
-
-struct _AsChecksum
-{
-	GObject			parent;
-};
+#define AS_TYPE_CHECKSUM (as_checksum_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsChecksum, as_checksum, AS, CHECKSUM, GObject)
 
 struct _AsChecksumClass
 {
@@ -75,7 +63,6 @@ typedef enum {
 	AS_CHECKSUM_TARGET_LAST
 } AsChecksumTarget;
 
-GType		 as_checksum_get_type		(void);
 AsChecksum	*as_checksum_new		(void);
 AsChecksumTarget as_checksum_target_from_string	(const gchar	*target);
 const gchar	*as_checksum_target_to_string	(AsChecksumTarget target);
diff --git a/libappstream-glib/as-icon.c b/libappstream-glib/as-icon.c
index 83586e2..dfdf37e 100644
--- a/libappstream-glib/as-icon.c
+++ b/libappstream-glib/as-icon.c
@@ -40,8 +40,7 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsIconPrivate	AsIconPrivate;
-struct _AsIconPrivate
+typedef struct
 {
 	AsIconKind		 kind;
 	gchar			*name;
@@ -53,7 +52,7 @@ struct _AsIconPrivate
 	guint			 height;
 	GdkPixbuf		*pixbuf;
 	GBytes			*data;
-};
+} AsIconPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsIcon, as_icon, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-icon.h b/libappstream-glib/as-icon.h
index e842cea..7a1c9f5 100644
--- a/libappstream-glib/as-icon.h
+++ b/libappstream-glib/as-icon.h
@@ -29,22 +29,10 @@
 #include <glib-object.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
-#define AS_TYPE_ICON		(as_icon_get_type())
-#define AS_ICON(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_ICON, AsIcon))
-#define AS_ICON_CLASS(cls)	(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_ICON, AsIconClass))
-#define AS_IS_ICON(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_ICON))
-#define AS_IS_ICON_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_ICON))
-#define AS_ICON_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_ICON, AsIconClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsIcon		AsIcon;
-typedef struct _AsIconClass	AsIconClass;
-
-struct _AsIcon
-{
-	GObject			parent;
-};
+#define AS_TYPE_ICON (as_icon_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsIcon, as_icon, AS, ICON, GObject)
 
 struct _AsIconClass
 {
@@ -110,7 +98,6 @@ typedef enum {
 
 #define	AS_ICON_ERROR				as_icon_error_quark ()
 
-GType		 as_icon_get_type		(void);
 AsIcon		*as_icon_new			(void);
 GQuark		 as_icon_error_quark		(void);
 
diff --git a/libappstream-glib/as-image.c b/libappstream-glib/as-image.c
index 89ca8db..661e5ee 100644
--- a/libappstream-glib/as-image.c
+++ b/libappstream-glib/as-image.c
@@ -40,8 +40,7 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsImagePrivate	AsImagePrivate;
-struct _AsImagePrivate
+typedef struct
 {
 	AsImageKind		 kind;
 	gchar			*url;
@@ -50,7 +49,7 @@ struct _AsImagePrivate
 	guint			 width;
 	guint			 height;
 	GdkPixbuf		*pixbuf;
-};
+} AsImagePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsImage, as_image, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-image.h b/libappstream-glib/as-image.h
index 2032d49..8e14b66 100644
--- a/libappstream-glib/as-image.h
+++ b/libappstream-glib/as-image.h
@@ -29,22 +29,10 @@
 #include <glib-object.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
-#define AS_TYPE_IMAGE		(as_image_get_type())
-#define AS_IMAGE(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_IMAGE, AsImage))
-#define AS_IMAGE_CLASS(cls)	(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_IMAGE, AsImageClass))
-#define AS_IS_IMAGE(obj)	(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_IMAGE))
-#define AS_IS_IMAGE_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_IMAGE))
-#define AS_IMAGE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_IMAGE, AsImageClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsImage		AsImage;
-typedef struct _AsImageClass	AsImageClass;
-
-struct _AsImage
-{
-	GObject			parent;
-};
+#define AS_TYPE_IMAGE (as_image_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsImage, as_image, AS, IMAGE, GObject)
 
 struct _AsImageClass
 {
@@ -124,7 +112,6 @@ typedef enum {
 #define AS_IMAGE_THUMBNAIL_HEIGHT	63	/* Since: 0.2.2 */
 #define AS_IMAGE_THUMBNAIL_WIDTH 	112	/* Since: 0.2.2 */
 
-GType		 as_image_get_type		(void);
 AsImage		*as_image_new			(void);
 
 /* helpers */
diff --git a/libappstream-glib/as-monitor.c b/libappstream-glib/as-monitor.c
index 2582c32..f7b15d1 100644
--- a/libappstream-glib/as-monitor.c
+++ b/libappstream-glib/as-monitor.c
@@ -35,10 +35,7 @@
 #include "as-cleanup.h"
 #include "as-monitor.h"
 
-
-
-typedef struct _AsMonitorPrivate	AsMonitorPrivate;
-struct _AsMonitorPrivate
+typedef struct
 {
 	GPtrArray		*array;		/* of GFileMonitor */
 	GPtrArray		*files;		/* of gchar* */
@@ -46,7 +43,7 @@ struct _AsMonitorPrivate
 	GPtrArray		*queue_changed;	/* of gchar* */
 	GPtrArray		*queue_temp;	/* of gchar* */
 	guint			 pending_id;
-};
+} AsMonitorPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsMonitor, as_monitor, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-monitor.h b/libappstream-glib/as-monitor.h
index 0906f09..511215a 100644
--- a/libappstream-glib/as-monitor.h
+++ b/libappstream-glib/as-monitor.h
@@ -29,22 +29,10 @@
 #include <glib-object.h>
 #include <gio/gio.h>
 
-#define AS_TYPE_MONITOR			(as_monitor_get_type())
-#define AS_MONITOR(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_MONITOR, AsMonitor))
-#define AS_MONITOR_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_MONITOR, AsMonitorClass))
-#define AS_IS_MONITOR(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_MONITOR))
-#define AS_IS_MONITOR_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_MONITOR))
-#define AS_MONITOR_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_MONITOR, AsMonitorClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsMonitor	AsMonitor;
-typedef struct _AsMonitorClass	AsMonitorClass;
-
-struct _AsMonitor
-{
-	GObject			parent;
-};
+#define AS_TYPE_MONITOR (as_monitor_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsMonitor, as_monitor, AS, MONITOR, GObject)
 
 struct _AsMonitorClass
 {
@@ -79,7 +67,6 @@ typedef enum {
 
 #define	AS_MONITOR_ERROR			as_monitor_error_quark ()
 
-GType		 as_monitor_get_type		(void);
 AsMonitor	*as_monitor_new			(void);
 GQuark		 as_monitor_error_quark		(void);
 
diff --git a/libappstream-glib/as-problem.c b/libappstream-glib/as-problem.c
index f4447b6..d8c850d 100644
--- a/libappstream-glib/as-problem.c
+++ b/libappstream-glib/as-problem.c
@@ -34,13 +34,12 @@
 
 #include "as-problem.h"
 
-typedef struct _AsProblemPrivate	AsProblemPrivate;
-struct _AsProblemPrivate
+typedef struct
 {
 	AsProblemKind		 kind;
 	gchar			*message;
 	guint			 line_number;
-};
+} AsProblemPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsProblem, as_problem, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-problem.h b/libappstream-glib/as-problem.h
index 9f59352..700e946 100644
--- a/libappstream-glib/as-problem.h
+++ b/libappstream-glib/as-problem.h
@@ -28,22 +28,10 @@
 
 #include <glib-object.h>
 
-#define AS_TYPE_PROBLEM			(as_problem_get_type())
-#define AS_PROBLEM(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_PROBLEM, AsProblem))
-#define AS_PROBLEM_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_PROBLEM, AsProblemClass))
-#define AS_IS_PROBLEM(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_PROBLEM))
-#define AS_IS_PROBLEM_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_PROBLEM))
-#define AS_PROBLEM_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_PROBLEM, AsProblemClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsProblem		AsProblem;
-typedef struct _AsProblemClass		AsProblemClass;
-
-struct _AsProblem
-{
-	GObject			parent;
-};
+#define AS_TYPE_PROBLEM (as_problem_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsProblem, as_problem, AS, PROBLEM, GObject)
 
 struct _AsProblemClass
 {
@@ -99,7 +87,6 @@ typedef enum {
 	AS_PROBLEM_KIND_LAST
 } AsProblemKind;
 
-GType		 as_problem_get_type		(void);
 AsProblem	*as_problem_new			(void);
 
 /* helpers */
diff --git a/libappstream-glib/as-provide.c b/libappstream-glib/as-provide.c
index 27b1aec..8189973 100644
--- a/libappstream-glib/as-provide.c
+++ b/libappstream-glib/as-provide.c
@@ -38,12 +38,11 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsProvidePrivate	AsProvidePrivate;
-struct _AsProvidePrivate
+typedef struct
 {
 	AsProvideKind		 kind;
 	gchar			*value;
-};
+} AsProvidePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsProvide, as_provide, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-provide.h b/libappstream-glib/as-provide.h
index 0196f3c..ba4b7ee 100644
--- a/libappstream-glib/as-provide.h
+++ b/libappstream-glib/as-provide.h
@@ -28,22 +28,10 @@
 
 #include <glib-object.h>
 
-#define AS_TYPE_PROVIDE			(as_provide_get_type())
-#define AS_PROVIDE(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_PROVIDE, AsProvide))
-#define AS_PROVIDE_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_PROVIDE, AsProvideClass))
-#define AS_IS_PROVIDE(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_PROVIDE))
-#define AS_IS_PROVIDE_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_PROVIDE))
-#define AS_PROVIDE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_PROVIDE, AsProvideClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsProvide		AsProvide;
-typedef struct _AsProvideClass		AsProvideClass;
-
-struct _AsProvide
-{
-	GObject			parent;
-};
+#define AS_TYPE_PROVIDE (as_provide_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsProvide, as_provide, AS, PROVIDE, GObject)
 
 struct _AsProvideClass
 {
@@ -91,7 +79,6 @@ typedef enum {
 	AS_PROVIDE_KIND_LAST
 } AsProvideKind;
 
-GType		 as_provide_get_type		(void);
 AsProvide	*as_provide_new			(void);
 
 /* helpers */
diff --git a/libappstream-glib/as-release.c b/libappstream-glib/as-release.c
index 0ca7a11..2cff6c6 100644
--- a/libappstream-glib/as-release.c
+++ b/libappstream-glib/as-release.c
@@ -46,15 +46,14 @@
 #include "as-tag.h"
 #include "as-utils-private.h"
 
-typedef struct _AsReleasePrivate	AsReleasePrivate;
-struct _AsReleasePrivate
+typedef struct
 {
 	gchar			*version;
 	GHashTable		*descriptions;
 	guint64			 timestamp;
 	GPtrArray		*locations;
 	GPtrArray		*checksums;
-};
+} AsReleasePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsRelease, as_release, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-release.h b/libappstream-glib/as-release.h
index d1bb49b..8515ce1 100644
--- a/libappstream-glib/as-release.h
+++ b/libappstream-glib/as-release.h
@@ -30,22 +30,10 @@
 
 #include "as-checksum.h"
 
-#define AS_TYPE_RELEASE			(as_release_get_type())
-#define AS_RELEASE(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_RELEASE, AsRelease))
-#define AS_RELEASE_CLASS(cls)		(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_RELEASE, AsReleaseClass))
-#define AS_IS_RELEASE(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_RELEASE))
-#define AS_IS_RELEASE_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_RELEASE))
-#define AS_RELEASE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_RELEASE, AsReleaseClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsRelease	AsRelease;
-typedef struct _AsReleaseClass	AsReleaseClass;
-
-struct _AsRelease
-{
-	GObject			parent;
-};
+#define AS_TYPE_RELEASE	(as_release_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsRelease, as_release, AS, RELEASE, GObject)
 
 struct _AsReleaseClass
 {
@@ -61,7 +49,6 @@ struct _AsReleaseClass
 	void (*_as_reserved8)	(void);
 };
 
-GType		 as_release_get_type		(void);
 AsRelease	*as_release_new			(void);
 gint		 as_release_vercmp		(AsRelease	*rel1,
 						 AsRelease	*rel2);
diff --git a/libappstream-glib/as-screenshot.c b/libappstream-glib/as-screenshot.c
index d2183c6..e43c767 100644
--- a/libappstream-glib/as-screenshot.c
+++ b/libappstream-glib/as-screenshot.c
@@ -41,14 +41,13 @@
 #include "as-utils-private.h"
 #include "as-yaml.h"
 
-typedef struct _AsScreenshotPrivate	AsScreenshotPrivate;
-struct _AsScreenshotPrivate
+typedef struct
 {
 	AsScreenshotKind	 kind;
 	GHashTable		*captions;
 	GPtrArray		*images;
 	gint			 priority;
-};
+} AsScreenshotPrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsScreenshot, as_screenshot, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-screenshot.h b/libappstream-glib/as-screenshot.h
index 15f9f17..008c902 100644
--- a/libappstream-glib/as-screenshot.h
+++ b/libappstream-glib/as-screenshot.h
@@ -30,22 +30,10 @@
 
 #include "as-image.h"
 
-#define AS_TYPE_SCREENSHOT		(as_screenshot_get_type())
-#define AS_SCREENSHOT(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_SCREENSHOT, AsScreenshot))
-#define AS_SCREENSHOT_CLASS(cls)	(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_SCREENSHOT, AsScreenshotClass))
-#define AS_IS_SCREENSHOT(obj)	(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_SCREENSHOT))
-#define AS_IS_SCREENSHOT_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_SCREENSHOT))
-#define AS_SCREENSHOT_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_SCREENSHOT, AsScreenshotClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsScreenshot		AsScreenshot;
-typedef struct _AsScreenshotClass	AsScreenshotClass;
-
-struct _AsScreenshot
-{
-	GObject			parent;
-};
+#define AS_TYPE_SCREENSHOT (as_screenshot_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsScreenshot, as_screenshot, AS, SCREENSHOT, GObject)
 
 struct _AsScreenshotClass
 {
@@ -77,7 +65,6 @@ typedef enum {
 	AS_SCREENSHOT_KIND_LAST
 } AsScreenshotKind;
 
-GType		 as_screenshot_get_type		(void);
 AsScreenshot	*as_screenshot_new		(void);
 
 /* helpers */
diff --git a/libappstream-glib/as-store.c b/libappstream-glib/as-store.c
index b6d8677..0a0f5b0 100644
--- a/libappstream-glib/as-store.c
+++ b/libappstream-glib/as-store.c
@@ -53,8 +53,7 @@ typedef enum {
 	AS_STORE_PROBLEM_LAST
 } AsStoreProblems;
 
-typedef struct _AsStorePrivate	AsStorePrivate;
-struct _AsStorePrivate
+typedef struct
 {
 	gchar			*destdir;
 	gchar			*origin;
@@ -71,7 +70,7 @@ struct _AsStorePrivate
 	guint32			 filter;
 	guint			 changed_block_refcnt;
 	gboolean		 is_pending_changed_signal;
-};
+} AsStorePrivate;
 
 G_DEFINE_TYPE_WITH_PRIVATE (AsStore, as_store, G_TYPE_OBJECT)
 
diff --git a/libappstream-glib/as-store.h b/libappstream-glib/as-store.h
index 3ca2ffc..85cc5b1 100644
--- a/libappstream-glib/as-store.h
+++ b/libappstream-glib/as-store.h
@@ -32,22 +32,10 @@
 #include "as-app.h"
 #include "as-node.h"
 
-#define AS_TYPE_STORE		(as_store_get_type())
-#define AS_STORE(obj)		(G_TYPE_CHECK_INSTANCE_CAST((obj), AS_TYPE_STORE, AsStore))
-#define AS_STORE_CLASS(cls)	(G_TYPE_CHECK_CLASS_CAST((cls), AS_TYPE_STORE, AsStoreClass))
-#define AS_IS_STORE(obj)	(G_TYPE_CHECK_INSTANCE_TYPE((obj), AS_TYPE_STORE))
-#define AS_IS_STORE_CLASS(cls)	(G_TYPE_CHECK_CLASS_TYPE((cls), AS_TYPE_STORE))
-#define AS_STORE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), AS_TYPE_STORE, AsStoreClass))
-
 G_BEGIN_DECLS
 
-typedef struct _AsStore		AsStore;
-typedef struct _AsStoreClass	AsStoreClass;
-
-struct _AsStore
-{
-	GObject			parent;
-};
+#define AS_TYPE_STORE (as_store_get_type ())
+G_DECLARE_DERIVABLE_TYPE (AsStore, as_store, AS, STORE, GObject)
 
 struct _AsStoreClass
 {
@@ -131,7 +119,6 @@ typedef enum {
 
 #define	AS_STORE_ERROR				as_store_error_quark ()
 
-GType		 as_store_get_type		(void);
 AsStore		*as_store_new			(void);
 GQuark		 as_store_error_quark		(void);