Default g_get_os_info() default parameter macros not found in docs.gtk.org/glib/
G_OS_INFO_KEY_NAME
, G_OS_INFO_KEY_PRETTY_NAME
, etc. https://developer-old.gnome.org/glib/stable/glib-Miscellaneous-Utility-Functions.html#G-OS-INFO-KEY-NAME:CAPS
G_OS_INFO_KEY_NAME
, G_OS_INFO_KEY_PRETTY_NAME
, etc. https://developer-old.gnome.org/glib/stable/glib-Miscellaneous-Utility-Functions.html#G-OS-INFO-KEY-NAME:CAPS