Since you wanted me to peel the onion  :-)
After I fixed the typo, here's what I found:
1. >>Error occurred processing ediff-diff.el: Cannot open load file: vc-hooks
So I added vc to the REQUIRES line.
2. >>Error occurred processing ediff-diff.el: Cannot open load file: tramp
I added tramp
3. >>Error occurred processing ediff-diff.el: Cannot open load file: format-spec
I added gnus
Regards,
  Vin
On Nov 2, 2007 11:30 AM, Michael Kifer <kifer(a)cs.sunysb.edu> wrote:
 Thanks. Sorry for the typo.
 I committed the change.
 Why did you add gnus and tramp to REQUIRES?
         --michael
 > With the latest round of changes to ediff, I can no longer build the packages:
 >
 > >>Error occurred processing ediff-diff.el: Symbol's value as variable
 > is void: vc-workfile-version
 >
 > Done
 > make[2]: *** [ediff-diff.elc] Error 1
 >
 > Indeed, vc-workfile is a function.  The patch below allows things to compile.
 >
 > diff -u
{scmroot/xemacs-packages,$BLDROOT/xemacs-packages-$(today)}/xemacs-packages/ediff/$f
 > done
 > --- scmroot/xemacs-packages/xemacs-packages/ediff/ediff-vers.el
 > 2007-11-02 10:12:31.000000000 -0400
 > +++ /usr/local/build/xemacs-packages-2007-11-02/xemacs-packages/ediff/ediff-vers.el
 >     2007-11-02 10:57:47.000000000 -0400
 > @@ -60,7 +60,7 @@
 >  (defalias 'ediff-vc-working-revision
 >    (if (fboundp 'vc-working-revision)
 >        'vc-working-revision
 > -    vc-workfile-version))
 > +    'vc-workfile-version))
 >
 >  ;; VC.el support
 >
 > --- scmroot/xemacs-packages/xemacs-packages/ediff/Makefile
 > 2007-08-30 20:06:05.000000000 -0400
 > +++ /usr/local/build/xemacs-packages-2007-11-02/xemacs-packages/ediff/Makefile
 >  2007-11-02 10:59:07.000000000 -0400
 > @@ -22,7 +22,7 @@
 >  MAINTAINER = Michael Kifer <kifer(a)cs.sunysb.edu>
 >  PACKAGE = ediff
 >  PKG_TYPE = regular
 > -REQUIRES = pcl-cvs elib dired xemacs-base edebug prog-modes
 > +REQUIRES = pcl-cvs elib dired xemacs-base edebug prog-modes gnus tramp vc
 >  CATEGORY = standard
 >
 >  ELCS = ediff-diff.elc ediff-help.elc ediff-hook.elc ediff-init.elc \
 >
 >
 > Regards,
 >   Vin
 >
 
-- 
The Journey by Mary Oliver
http://www.poemhunter.com/p/m/poem.asp?poet=6771&poem=30506
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