[guile-2.2] threads

[Thomas Morley]

Hi all,

guile-2.2 prints a warning, if module (ice-9 threads) is not imported.
(This does not happen with guile-1.8 or guile-2.0)
Import (ice-9 threads) to have access to `call-with-new-thread'.
Import (ice-9 threads) to have access to `current-thread'.

As suggested by Arne Babenhauserheide from the guile-mailing list, in
memory-trace.scm we could do something at the lines of

;; TODO if lilypond moves to guile-2.2 merge the next two settings
(use-modules (lily)
             (ice-9 format))
(if guile-v2 (use-modules (ice-9 threads)))

This would even be compatible with guile-1.8 (ofcourse one would do it
with a little different coding)

Though, I think we currently have no need for it. So importing (ice-9
threads) would be pointless.
If I'm right in this, would there be any other way to avoid this
warning-messages?


Cheers,
  Harm