From: Ken Bloom <kbloom@...>
Date: 2009-05-21T10:08:21+09:00
Subject: Re: undefined method `empty?' for nil:NilClass in gem build

On Thu, 21 May 2009 04:11:27 +0900, Eric Hodel wrote:

> On May 20, 2009, at 10:08, Ken Bloom wrote:
> 
>> I'm trying to build a rubygem, but I keep getting the following error.
>> Can anybody help?
>>
>> $ gem build wordnet.gemspec
>> ERROR:  While executing gem ... (NoMethodError)
>>    undefined method `empty?' for nil:NilClass

> NOTE: DON'T be lazy, do it right!  You forgot to specify all these
> things.  Filling them in is in the best interests of everyone.
> 
> $ gem build wordnet.gemspec
> WARNING:  no description specified
> WARNING:  no homepage specified
> WARNING:  no rubyforge_project specified
>    Successfully built RubyGem
>    Name: WordNet
>    Version: 1.0.1
>    File: WordNet-1.0.1.gem
> $ gem env version
> 1.3.3

It was the missing homepage field.

But failure to specify a homepage or rubyforge_project shouldn't be 
considered lazy, when some projects don't have one becuase they're not 
released yet, or (for the rubyforge_probject) when they're released 
somehere other than Rubyforge, such as GitHub.

--Ken

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