Keywords:	perl CPAN Net::SSH dependency problems errors strange weird

You get:	A module you're trying to install (for me it was Net::SSH)
		fail strangley. Some dependencies (MD5 for me) seem to install
		ok, but then the entire install will fail on "make test". Then
		when you try it again, it installs the dependencies all over
		again and nothing seems to go anywhere.

The problem:	Your installation path is incorrect. CPAN is installing the
		dependencies somewhere where perl cannot find them, which is
		why the dependencies do not get detected and keep being
		reinstalled

		To check on this:

		check the value of the "makepl_arg" in the CPAN config. you
		need to be root or run as sudo:

$ sudo grep makepl_arg /root/.cpan/CPAN/MyConfig.pm
  'makepl_arg' => q[PREFIX=/usr/local INSTALLMAN1DIR=/usr/local/share/man/man1 INSTALLMAN3DIR=/usr/local/share/man/man3],

		ok, CPAN is telling make to prefix everything with /usr/local.
		now let's see if perl was compiled to check there:

$ perl -le'print for @INC' | grep "/usr/local"
/usr/local/lib/site_perl

		we do see one entry, but @INC seemed much longer than one or
		two entries, lets look at the whole thing:

$ perl -le'print for @INC'
/etc/perl
/usr/lib/perl5/site_perl/5.8.4/i686-linux
/usr/lib/perl5/site_perl/5.8.4
/usr/lib/perl5/site_perl/5.8.2/i686-linux
/usr/lib/perl5/site_perl/5.8.2
/usr/lib/perl5/site_perl/5.8.0/i686-linux
/usr/lib/perl5/site_perl/5.8.0
/usr/lib/perl5/site_perl
/usr/lib/perl5/vendor_perl/5.8.4/i686-linux
/usr/lib/perl5/vendor_perl/5.8.4
/usr/lib/perl5/vendor_perl/5.8.2/i686-linux
/usr/lib/perl5/vendor_perl/5.8.2
/usr/lib/perl5/vendor_perl/5.8.0/i686-linux
/usr/lib/perl5/vendor_perl/5.8.0
/usr/lib/perl5/vendor_perl
/usr/lib/perl5/5.8.4/i686-linux
/usr/lib/perl5/5.8.4
/usr/local/lib/site_perl
/usr/lib/perl5/site_perl/5.8.2/i686-linux
/usr/lib/perl5/site_perl/5.8.2
/usr/lib/perl5/site_perl/5.8.0/i686-linux
/usr/lib/perl5/site_perl/5.8.0
.

		it looks like perl is really set up to search /usr instead of
		/usr/local

		Unfortunately, I've been told by those know know more about
		perl than myself that @INC cannot be easily permanently
		changed, because it's set at compile time. So, instead we need
		to tell CPAN to tell make to put things in /usr instead of
		/usr/local

		edit /root/.cpan/CPAN/MyConfig.pm as root or with sudo and
		change the value

		then start cpan up again and try the install

		this worked for me, hope it helps you


Disclaimer:	I am not an expert on the subject, I'm just a guy who ran into
		a problem and wrote about how I fixed it.

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