From: Albert Schlef <albertschlef@...>
Date: 2010-03-29T08:21:30+09:00
Subject: a question about gem's ~>

I have a question about RubyGems's "~>". Sorry for asking this here.
I've searched in their "manual", but it's like searching a needle in a
haystack.

My question is simple:

My gem works only on Ruby 1.8 (that is, it doesn't work on Ruby 1.9 (and
isn't supposed to)).

In my gem specification I have:

  s.required_ruby_version = '~> 1.8'

Is this correct? Or do I have to write '~> 1.8.0' ?

Unfortunately, Ruby 1.9's 'gem' installs my gem. I want it to refuse to
do this. I suspect that's because '~> 1.8' includes all versions of Ruby
till 2.0 (not including).

So haw can I tell RubyGems that my gem is for 1.8 only?
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