Hello everyone,

I just updated my Perl and had to install a bunch of my favorite libraries.
Then I installed Doy's reply to play around, and I ran into the problem I
always run into, solve, and then forget until the next time I run into it.
The REPLs need Term::ReadLine::Gnu on OS X and it seems like a pain to
install because there is a conflict on OS X, but it is actually pretty easy
using homebrew (as described by Aristotle over a year ago
<http://blogs.perl.org/users/aristotle/2013/07/easy-osx-termreadlinegnu.html>
):

brew install readline
brew link --force readline
cpanm Term::ReadLine::Gnu
brew unlink readline

PDL 2.007 installed without problems, and the pdl shell works with my
arrows keys and history.

I wanted to post it here to spread the approach.  Perhaps there is a better
approach now.

Demian
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