Index: graphics/gdk-pixbuf2/Makefile
===================================================================
--- graphics/gdk-pixbuf2/Makefile
+++ graphics/gdk-pixbuf2/Makefile
@@ -16,11 +16,13 @@
 BUILD_DEPENDS=	docbook-xsl>0:textproc/docbook-xsl
 
 USES=		cpe gettext gnome localbase:ldflags meson pkgconfig \
-		python:3.4+,build shared-mime-info tar:xz
+		python:3.4+,build shared-mime-info tar:xz trigger
 CPE_VENDOR=	gnome
 USE_GNOME=	glib20 introspection:build libxslt:build
 USE_LDCONFIG=	yes
 MESON_ARGS=	-Dman=true
+TRIGGERS=	gdk-pixbuf-query-loaders
+SUB_LIST=	GTK2_VERSION=${GTK2_VERSION}
 
 BINARY_ALIAS=	python3=${PYTHON_VERSION}
 
Index: graphics/gdk-pixbuf2/files/gdk-pixbuf-query-loaders.ucl.in
===================================================================
--- /dev/null
+++ graphics/gdk-pixbuf2/files/gdk-pixbuf-query-loaders.ucl.in
@@ -0,0 +1,17 @@
+path: "%%PREFIX%%/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders"
+cleanup: {
+	type: lua
+	sandbox: false
+	script: <<EOS
+print("Removing gdk-pixbuf cache directory")
+os.remove("%%PREFIX%%/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders")
+EOS
+}
+trigger: {
+	type: lua
+	sandbox: false
+	script: <<EOS
+print("Generating gdk-pixbuf modules cache")
+pkg.exec({"%%PREFIX%%/bin/gdk-pixbuf-query-loaders"})
+EOS
+}
Index: graphics/gdk-pixbuf2/pkg-plist
===================================================================
--- graphics/gdk-pixbuf2/pkg-plist
+++ graphics/gdk-pixbuf2/pkg-plist
@@ -152,5 +152,3 @@
 share/locale/zh_HK/LC_MESSAGES/gdk-pixbuf.mo
 share/locale/zh_TW/LC_MESSAGES/gdk-pixbuf.mo
 share/thumbnailers/gdk-pixbuf-thumbnailer.thumbnailer
-@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-@postunexec rm %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>&1 >/dev/null || true
Index: graphics/libavif/pkg-plist
===================================================================
--- graphics/libavif/pkg-plist
+++ graphics/libavif/pkg-plist
@@ -9,5 +9,3 @@
 lib/libavif.so.13
 lib/libavif.so.13.0.0
 libdata/pkgconfig/libavif.pc
-%%PIXBUF%%@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-%%PIXBUF%%@postunexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
Index: graphics/libjxl/pkg-plist
===================================================================
--- graphics/libjxl/pkg-plist
+++ graphics/libjxl/pkg-plist
@@ -33,5 +33,3 @@
 %%MANPAGES%%share/man/man1/djxl.1.gz
 share/mime/packages/image-jxl.xml
 %%PIXBUF%%share/thumbnailers/jxl.thumbnailer
-%%PIXBUF%%@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-%%PIXBUF%%@postunexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
Index: graphics/librsvg2-rust/pkg-plist
===================================================================
--- graphics/librsvg2-rust/pkg-plist
+++ graphics/librsvg2-rust/pkg-plist
@@ -131,5 +131,3 @@
 share/gir-1.0/Rsvg-2.0.gir
 share/thumbnailers/librsvg.thumbnailer
 share/vala/vapi/librsvg-2.0.vapi
-@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-@postunexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
Index: graphics/librsvg2/pkg-plist
===================================================================
--- graphics/librsvg2/pkg-plist
+++ graphics/librsvg2/pkg-plist
@@ -35,5 +35,3 @@
 share/gir-1.0/Rsvg-2.0.gir
 share/thumbnailers/librsvg.thumbnailer
 %%VAPI%%share/vala/vapi/librsvg-2.0.vapi
-@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-@postunexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
Index: graphics/webp-pixbuf-loader/pkg-plist
===================================================================
--- graphics/webp-pixbuf-loader/pkg-plist
+++ graphics/webp-pixbuf-loader/pkg-plist
@@ -1,4 +1,2 @@
 lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders/libpixbufloader-webp.so
 share/thumbnailers/webp-pixbuf.thumbnailer
-@postexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true
-@postunexec %D/bin/gdk-pixbuf-query-loaders > /dev/null 2>&1 && %D/bin/gdk-pixbuf-query-loaders > %D/lib/gdk-pixbuf-2.0/%%GTK2_VERSION%%/loaders.cache 2>/dev/null || /usr/bin/true