在 Rails 3 的“捆绑安装”中本地宝石（冻结宝石），不断收到“源不包含任何版本......”？
我正在使用位于 vendor/gems/some-api-0.1.0 中的 gem，从另一个项目复制过来，并添加到 Gemfile 中：
gem 'some-api', :path => '~/development/myproj/vendor/gems/some-api-0.1.0'
但是如果我这样做接下来，它将失败并显示消息：
$ bundle install
Fetching source index for http://rubygems.org/
Could not find gem 'some-api (>= 0)' in source at ~/development/myproj/vendor/gems/some-api-0.1.0.
Source does not contain any versions of 'some-api (>= 0)'
在网上搜索似乎建议需要 gemspec？所以我需要在某个地方写一个 .gemspec ，这是真的吗？有人可以阐明在这种情况下是如何完成的吗？
I am using a gem which is in vendor/gems/some-api-0.1.0, copied over from another project, and added to Gemfile:
gem 'some-api', :path => '~/development/myproj/vendor/gems/some-api-0.1.0'
but if I do the following, it will fail with the message:
$ bundle install
Fetching source index for http://rubygems.org/
Could not find gem 'some-api (>= 0)' in source at ~/development/myproj/vendor/gems/some-api-0.1.0.
Source does not contain any versions of 'some-api (>= 0)'
Searching on the net seem to suggest needing a gemspec? So I need to write up a .gemspec some where, is that true? Can someone shred light of how it is done in this situation?
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stackoverflow 上还有许多其他类似的帖子，但以防万一有人偶然发现这篇文章：
出于某种原因，当您尝试使用本地源的 gem 时，您需要准确指定您正在使用的 gem 的版本，例如
There are many other similar posts on stackoverflow, but just in case someone stumble across this post:
For some reason, when you are trying to use a gem from local source, you need to specify exactly which version of the gem you are using, e.g.
仅仅声称 :path 中有一个 gem 并不意味着那里实际上有一个 gem。 Gem 具有 gemspec 文件，描述 gem 的名称、属于该 gem 的文件以及各种其他信息。
如果
some-api-0.1.0应在 :path 目录中包含名为some-api.gemspec的文件，并且它应包含有关捆绑程序可以使用的 gem 的信息要求 gem 离开 :path。Just claiming there is a gem in the :path doesn't mean there actually is a gem there. Gems have gemspec files describing the name of the gem, what files belong to the gem, and various other information.
If
some-api-0.1.0should contain a file namedsome-api.gemspecin the :path directory, and it should contain information about the gem that bundler could use to require the gem out of the :path.