n00b question- rebuilding mirage tree

[Richard Mortier <Richard.Mortier@xxxxxxxxxxxxxxxx>]

just doing a rebuild after not merging for a while - am being told 

: mort@greyjay:mirage.git$; make PREFIX=~/research/mirage/install all install
/Users/mort/research/mirage/mirage.git/tools/crunch
Finished, 0 targets (0 cached) in 00:00:00.
Finished, 6 targets (6 cached) in 00:00:00.
/Users/mort/research/mirage/mirage.git/tools/mir
make[1]: Nothing to be done for `all'.
/Users/mort/research/mirage/mirage.git/syntax
Finished, 0 targets (0 cached) in 00:00:00.
Finished, 106 targets (106 cached) in 00:00:00.
/Users/mort/research/mirage/mirage.git/lib
OS: unix
Flow: socket
# No parallelism done
OS: unix
Flow: direct
# No parallelism done
Assembling: camlp4 extensions
Skipping: Xen
Assembling: UNIX direct
Assembling: UNIX socket
Assembling: node socket
Must build node-socket first
make: *** [install] Error 1


...what is node-socket, and how should i install it?  (npm search throws up 
many socket related things, but nothing called node-socket)

(on osx 10.5/64bit if it makes a difference.)
-- 
Cheers,

R.

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