Using tango, the app startup prints:
Loaded lib = {}, libglade-2.0.so
Loaded lib = {}, libgtk-x11-2.0.so
Loaded lib = {}, libglib-2.0.so
Loaded lib = {}, libatk-1.0.so
Loaded lib = {}, libgobject-2.0.so
Loaded lib = {}, libgdk-x11-2.0.so
Loaded lib = {}, libgdk_pixbuf-2.0.so
Loaded lib = {}, libgthread-2.0.so
Loaded lib = {}, libpango-1.0.so
I found this places with grep
gtkD/wrap/Loader.d:207: version(Tango) Stdout("Loaded lib = {}", libraryName).newline;
gtkD/src/gtkc/Loader.d:207: version(Tango) Stdout("Loaded lib = {}", libraryName).newline;
They should be corrected to:
version(Tango) Stdout.formatln("Loaded lib = {}", libraryName);