Like the subject says, when installing in text and / or expert modes
(since, even in expert GUI mode, the keyboard is still configured in text
mode), there's no ability to configure dead key support.
This will be added to the future feature request list.
Related to bug number 12107.
Related to bug 12107. (Hopefully link will get highlighted in this form)
*** This bug has been marked as a duplicate of 36838 ***