This directory is for storing GTK blueprints. GTK blueprints are compiled into GTK resource builder .ui files by blueprint-compiler at build time and then converted into an embeddable resource by glib-compile-resources.

Blueprint files should be stored in directories that represent the minimum Adwaita version needed to use that resource. Blueprint files should also be formatted using blueprint-compiler format as well to ensure consistency (formatting will be checked in CI).

blueprint-compiler version 0.16.0 or newer is required to compile Blueprint files. If your system does not have blueprint-compiler or does not have a new enough version you can use the generated source tarballs, which contain precompiled versions of the blueprints.