libgdk-pixbuf-xlib-2.0-dev - 2.40.2-3+b2 main

This package contains the header files which are needed for using
GDK Pixbuf's deprecated Xlib integration.
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No newly written code should ever use this library.
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If your existing code depends on gdk-pixbuf-xlib, then you're strongly
encouraged to port away from it.