Dependency Hell (Test::Harness)

[hysterion]

I'm running Jaguar 10.2.4 with the stock perl, which has Test::Harness 
1.1604.

I want to install modules like Getopt::ArgvFile (1.06), which asks me 
for Test::Harness => 1.25. (It also asks for Test::More, now IIUC part 
of Test::Simple, which requires Test::Harness => 2.03.)

So it looks like I need tu upgrade Test::Harness. Now I'd rather leave 
the stock perl untouched (like Fink does), so I try to set things up in 
a separate "/Volumes/Unix/usrlocal" dir:

  % setenv PERL5LIB /Volumes/Unix/usrlocal/lib/perl5
  % perl Makefile.PL `cat ~/.perl_inst_dirs`
where

  % cat ~/.perl_inst_dirs
  PREFIX=/Volumes/Unix/usrlocal \
  INSTALLPRIVLIB=/Volumes/Unix/usrlocal/lib/perl5 \
  INSTALLARCHLIB=/Volumes/Unix/usrlocal/lib/perl5/darwin \
  INSTALLSITELIB=/Volumes/Unix/usrlocal/lib/perl5 \
  INSTALLSITEARCH=/Volumes/Unix/usrlocal/lib/perl5/darwin \
  INSTALLMAN1DIR=/Volumes/Unix/usrlocal/share/man/man1 \
  INSTALLMAN3DIR=/Volumes/Unix/usrlocal/share/man/man3
This works fine to install any CPAN versions of Test::Harness (2.03 is 
the oldest I see) and Test::Simple (=> 0.42). But then I get:

  [localhost:~/Getopt-ArgvFile-1.06] fz% perl Makefile.PL `cat
  ~/.perl_inst_dirs`
  Checking if your kit is complete...
  Looks good
  Writing Makefile for Getopt::ArgvFile
  [localhost:~/Getopt-ArgvFile-1.06] fz% make
  mkdir blib
  mkdir blib/lib
  mkdir blib/lib/Getopt
  mkdir blib/arch
  mkdir blib/arch/auto
  mkdir blib/arch/auto/Getopt
  mkdir blib/arch/auto/Getopt/ArgvFile
  mkdir blib/lib/auto
  mkdir blib/lib/auto/Getopt
  mkdir blib/lib/auto/Getopt/ArgvFile
  mkdir blib/man3
  cp ArgvFile.pm blib/lib/Getopt/ArgvFile.pm
  Manifying blib/man3/Getopt::ArgvFile.3
  [localhost:~/Getopt-ArgvFile-1.06] fz% make test
  PERL_DL_NONLAZY=1 /usr/bin/perl -Iblib/arch -Iblib/lib
  -I/System/Library/Perl/darwin -I/System/Library/Perl -e 'use
  Test::Harness qw(&runtests $verbose); $verbose=0; runtests @ARGV;'
  t/*.t
  t/base..............FAILED tests 1-5
                  Failed 5/5 tests, 0.00% okay
  t/prefix............FAILED tests 1-2
                  Failed 2/2 tests, 0.00% okay
  Failed Test  Status Wstat Total Fail  Failed  List of failed
-------------------------------------------------------------------------------
  t/base.t                      5    5 100.00%  1-5
  t/prefix.t                    2    2 100.00%  1-2
  Failed 2/2 test scripts, 0.00% okay. 7/7 subtests failed, 0.00% okay.
  make: *** [test_dynamic] Error 255
So, is it at this point using the correct Test::Harness?
If yes, what am I doing wrong?
If no, what am I doing wrong?