Install libgtkd-3-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgtkd-3-dev
Description:
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. . This package contains development files needed to write applications in the D programming language that use GTK+.
Homepage: https://gtkd.org/
Version: 3.7.5-2build1
Section: universe/libdevel