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安装声明性授权将安装rails 3的依赖项

rubygems ruby

pjb3 · 技术社区 · 14 年前

声明性授权gem的0.4.1版将rails>=2.1.0作为依赖项。如果您先安装rails 2.3.5,然后安装声明性授权的0.4.1,您将获得rails 3的依赖项。如果声明式_授权需要rails>=2.1.0,如果安装了2.3.5,则应该满足该依赖关系,对吗?是什么原因导致安装了所有其他gems?这是rubygems病毒吗?

$ ruby -v
ruby 1.8.7 (2010-04-19 patchlevel 253) [i686-darwin10.4.0], MBARI 0x6770, Ruby Enterprise Edition 2010.02

$ gem -v
1.3.7

$ gem install rails -v 2.3.5
Successfully installed rake-0.8.7
Successfully installed activesupport-2.3.5
Successfully installed activerecord-2.3.5
Successfully installed rack-1.0.1
Successfully installed actionpack-2.3.5
Successfully installed actionmailer-2.3.5
Successfully installed activeresource-2.3.5
Successfully installed rails-2.3.5
8 gems installed

$ gem install declarative_authorization -v 0.4.1
Successfully installed declarative_authorization-0.4.1
Successfully installed activesupport-3.0.3
Successfully installed builder-2.1.2
Successfully installed i18n-0.4.2
Successfully installed activemodel-3.0.3
Successfully installed rack-1.2.1
Successfully installed rack-test-0.5.6
Successfully installed rack-mount-0.6.13
Successfully installed tzinfo-0.3.23
Successfully installed abstract-1.0.0
Successfully installed erubis-2.6.6
Successfully installed actionpack-3.0.3
Successfully installed arel-2.0.4
Successfully installed activerecord-3.0.3
Successfully installed activeresource-3.0.3
Successfully installed mime-types-1.16
Successfully installed polyglot-0.3.1
Successfully installed treetop-1.4.9
Successfully installed mail-2.2.10
Successfully installed actionmailer-3.0.3
Successfully installed thor-0.14.4
Successfully installed railties-3.0.3
Successfully installed bundler-1.0.7
23 gems installed

$ gem dependency declarative_authorization
Gem declarative_authorization-0.4.1
  rails (>= 2.1.0, runtime)

2 回复 | 直到 14 年前

Ryan Bigg Andrés Bonilla 14 年前

使用指定版本号时 >= 为了一个 gem,Rubygems总是试图为gem获取最新的和最好的,不管依赖性是否已经满足。这不是一个bug,而是预期的行为。要解决这个问题,gem作者应该指定gem依赖于Rails 2的任何版本,方法是:

s.add_dependency 'rails', '~> 2'

总之,这是gem作者的错,不是Rubygems。

Neeraj Singh 14 年前

这令人费解。

可能是声明性授权gem依赖于某些其他gem,而这些gem错误地依赖于rails3。我注意到一个gem开始使用ActiveSupport 3的一些新特性,这打破了整个链。

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