Broken git difftool, perhaps related to recent Perl changes

[David Eisner <deisner at gmail dot com>]

[I'm using 32-bit Cygwin (1.7.35) on a Win7 64-bit system.]

I now get the following error when I run 'git difftool':

$ git difftool
Can't locate Error.pm in @INC (@INC contains:
/usr/lib/perl5/site_perl/5.14
/usr/lib/perl5/site_perl/5.14/i686-cygwin-threads-64int
/usr/lib/perl5/vendor_perl/5.14/i686-cygwin-threads-64int
/usr/lib/perl5/vendor_perl/5.14
/usr/lib/perl5/5.14/i686-cygwin-threads-64int /usr/lib/perl5/5.14 .)
at /usr/libexec/git-core/git-difftool line 17.
BEGIN failed--compilation aborted at /usr/libexec/git-core/git-difftool line 17.

This used to work. Maybe this is related to the recent Perl
distribution changes that Achim announced a few days ago. I
uninstalled and reinstalled git, but to no avail.

I do have perl-Error installed, but it looks like the module is only
installed in the 5.10 path:

$ which perl
/usr/bin/perl

$ cygcheck -f /usr/bin/perl
perl_base-5.14.4-3

$ cygcheck -l perl-Error
/usr/lib/perl5/vendor_perl/5.10/Error/Simple.pm
/usr/lib/perl5/vendor_perl/5.10/Error.pm
/usr/lib/perl5/vendor_perl/5.10/i686-cygwin/auto/Error/.packlist
/usr/share/doc/Cygwin/perl-Error.README
/usr/share/doc/perl/html/html3/site/lib/Error/Simple.html
/usr/share/doc/perl/html/html3/site/lib/Error.html
/usr/share/doc/perl-Error/ChangeLog
/usr/share/doc/perl-Error/README
/usr/share/man/man3/Error.3pm.gz
/usr/share/man/man3/Error.Simple.3pm.gz

And, in fact, I can get 'git difftool' to work if I modify the perl
include path:

$ PERL5LIB="/usr/lib/perl5/vendor_perl/5.10" git difftool

Viewing (1/1): 'parse_mentor.py'
Launch 'diff_merge' [Y/n]:

Is this a perl-Error packaging issue, or is my perl setup broken?

Thanks.

-David

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