diff '--color=auto' -Nurd gdk-pixbuf-2.42.12/gdk-pixbuf/meson.build gdk-pixbuf-2.42.12.new/gdk-pixbuf/meson.build
--- gdk-pixbuf-2.42.12/gdk-pixbuf/meson.build	2025-07-01 18:58:08.263906972 -0700
+++ gdk-pixbuf-2.42.12.new/gdk-pixbuf/meson.build	2025-07-01 18:54:50.384849537 -0700
@@ -383,6 +383,7 @@
     'gdk_pixbuf_query_loaders=${bindir}/gdk-pixbuf-query-loaders',
   ],
   requires: 'gobject-2.0',
+  requires_private: 'libpng',
   subdirs: gdk_pixbuf_api_name,
   filebase: gdk_pixbuf_api_name,
 )