Failing to compile 2.6.8: Guile reports error

[Raphael Manfredi]

Here's the error I'm getting:

------------------
Parsing...[/home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/ly/init.ly[/home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/ly/declarations-init.ly[/home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/ly/music-functions-init.ly
/home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/ly/music-functions-init.ly:99:1:
 error: GUILE signaled an error for the expression beginning here
#
 (use-modules (scm display-lily))invalid module name for use-syntax ((srfi 
srfi-39))

/home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/ly/music-functions-init.ly:99:5:
 error: syntax error, unexpected '-', expecting '='
#(use
     -modules (scm display-lily))Backtrace:
In unknown file:
   ?:  0* [lilypond-main #]
   ?:  1* (letrec ((no-files-handler #)) (if (ly:get-option #) (gui-main 
files)) ...)
In /home/ram/tmp/music/lilypond-2.8.6/out/share/lilypond/current/scm/lily.scm:
 380:  2  (let ((failed #)) (if (pair? failed) (begin # #) (begin # #)))
 380:  3* [lilypond-all #]
[stripped]
------------------

Any advice on how to move forward?  I'm using the latest guile available on
Debian unstable (1.6.8-4).

Please don't tell me to install a more recent guile :-).  I'm already
attempting to compile lilypond because Debian is stuck to 2.6.3 and has
been so for a looong time now.

The funny thing is, I don't see any syntax error in the

        (use-modules (scm display-lily))

line.  This looks valid lisp to me.

Thanks for a helping hand here.

Raphael