From: Ken Bloom <kbloom@...>
Date: 2007-02-22T00:10:13+09:00
Subject: Re: Mechanize failure

On Wed, 21 Feb 2007 22:58:08 +0900, Gregory Seidman wrote:

> On Wed, Feb 21, 2007 at 10:54:01PM +0900, Alex Young wrote:
>> Gregory Seidman wrote:
>> >On Wed, Feb 21, 2007 at 10:41:17PM +0900, Alex Young wrote:
>> >
>> >>Hi all,
>> >>
>> >>Does anybody recognise this?
>> >>
>> >>$ gem check -t mechanize
>> >>ERROR:  While executing gem ... (NameError)
>> >>   method `use_ssl?' not defined in Net::HTTP
>> >>
>> >>This is on a Debian system, so I've probably forgotten an apt-get
>> >>install somewhere, but I can't spot which one:
>> >>
>> >>$ dpkg -l | grep ruby
>> >>ii  libmysql-ruby1 2.4.5-6.1      MySQL module for Ruby 1.8
>> >>ii  libopenssl-rub 1.0.0+ruby1.8. OpenSSL interface for Ruby
>> >>
>> >[...]
>> >
>> >You're cut off there for some reason, but you should make sure you have
>> >libopenssl-ruby1.8 installed, not just libopenssl-ruby.
>> >
>> Ah.  Thanks.  Any idea what the difference between the two is, and when
>> you'd want one rather than the other?
>
> Compare:
>
> apt-cache policy libopenssl-ruby
> apt-cache policy libopenssl-ruby1.8
>
> It looks like libopenssl-ruby is targeted at ruby 1.8.2.

Wrong!

libopenssl-ruby is simply a dummy package designed to install the
appropriate version of the package for the appropriate version of the
interpreter. By installing ruby, you get ruby 1.8 pulled in as a dependancy
(as opposed to ruby 1.9). Likewise, by installing libopenssl-ruby, you get
libopenssl-ruby1.8 as opposed to 1.9. One day when 2.0 becomes the new
stable, you'll be upgraded to ruby2.0 and libopenssl-ruby2.0 automatically
because they'll be the new dependancies for the dummy package.

Package: libopenssl-ruby
[snip part of the description]
Description: OpenSSL interface for Ruby
 This package makes Ruby to be able to use OpenSSL. It includes HTTP and
 TELNET protocols' SSL/TLS support.
 .
 This package is a dependency package, which depends on Debian's default
 Ruby version (currently 1.8.x).


--
Ken Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/