Binary package “libgtkd-3-dev” in ubuntu bionic
GTK+ graphical user interface library - development files for D
GTK+ is a multi-platform toolkit for creating graphical user interfaces.
Offering a complete set of widgets, GTK+ is suitable for projects ranging
from small one-off tools to complete application suites.
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This package contains development files needed to write applications in
the D programming language that use GTK+.