Question

我正在尝试将Nokogiri升级到版本1.7：

gem 'nokogiri', '~> 1.7'

但是当我跑步时：

bundle update --source nokogiri

我明白了：

Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies.............
Bundler could not find compatible versions for gem "nokogiri":

这是我的Gemfile：

    nokogiri (~> 1.7)

    activemerchant (~> 1.58.0) was resolved to 1.58.0, which depends on
      nokogiri (~> 1.4)

    activemerchant (~> 1.58.0) was resolved to 1.58.0, which depends on
      nokogiri (~> 1.4)

    capybara was resolved to 2.7.0, which depends on
      nokogiri (>= 1.3.3)

    cucumber-rails was resolved to 1.4.3, which depends on
      nokogiri (~> 1.5)

    haml-rails was resolved to 0.9.0, which depends on
      html2haml (>= 1.0.1) was resolved to 2.0.0, which depends on
        nokogiri (~> 1.6.0)

    haml-rails was resolved to 0.9.0, which depends on
      html2haml (>= 1.0.1) was resolved to 2.0.0, which depends on
        nokogiri (~> 1.6.0)

    rails (>= 4.2.6, ~> 4.2) was resolved to 4.2.6, which depends on
      actionmailer (= 4.2.6) was resolved to 4.2.6, which depends on
        actionview (= 4.2.6) was resolved to 4.2.6, which depends on
          rails-html-sanitizer (>= 1.0.2, ~> 1.0) was resolved to 1.0.3, which depends on
            loofah (~> 2.0) was resolved to 2.0.3, which depends on
              nokogiri (>= 1.5.9)

    roo (~> 2.4.0) was resolved to 2.4.0, which depends on
      nokogiri (~> 1)

    roo-xls was resolved to 1.0.0, which depends on
      nokogiri

    capybara was resolved to 2.7.0, which depends on
      xpath (~> 2.0) was resolved to 2.0.0, which depends on
        nokogiri (~> 1.3)

有没有人知道它为什么找不到它？我在rubygems.org上看到当前版本是1.7.1以及github。我是否需要指定github源？

Answer 1

问题在于：

haml-rails was resolved to 0.9.0, which depends on
  html2haml (>= 1.0.1) was resolved to 2.0.0, which depends on
    nokogiri (~> 1.6.0)

如您所见，html2haml取决于nokogiri (~> 1.6.0)，即不 1.7。您需要更新html2haml（因此相关性变为nokogiri (~> 1.6)）或使用nokogiri, ~> 1.6。

您可以尝试删除Gemfile.lock文件并再次运行bundle install，但我建议您在尚未投入使用时进行此操作。

Answer 2

我认为其他宝石依赖于Nokogiri，所以试试bundle update。

bundle update将解析依赖关系树并尝试安装满足所有其他gem依赖关系的版本。

如何修复捆绑“无法找到版本”升级Nokogiri

2 个答案: