> "GTK4 for Graphical User Interfaces with the Nim Programming Language" And it is outdated, as there would be no GTK4 - instead it would be released as GTK40,

> "GTK4 for Graphical User Interfaces with the Nim Programming Language" And it is outdated, as there would be no GTK4 - instead it would be released as GTK40, so some API could be changed and samples from this book would not work anymore.