问题
I added to Gemfile : gem 'google-api-client', "0.6.4"
1> execute “bundle install”, and got this error: Fetching gem metadata from https://rubygems.org/.. Resolving dependencies... Bundler could not find compatible versions for gem "addressable": In Gemfile: google-api-client (= 0.6.4) ruby depends on addressable (>= 2.3.2) ruby
koala (>= 0) ruby depends on
addressable (2.2.8)
2> execute “bundle update koala”, got this error: Fetching gem metadata from https://rubygems.org/.. Resolving dependencies... Bundler could not find compatible versions for gem "launchy": In snapshot (Gemfile.lock): launchy (2.1.0)
In Gemfile: google-api-client (= 0.6.4) ruby depends on launchy (>= 2.1.1) ruby
Running bundle update will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
What is the core issue of this error? And how can I solve it?
Thank you.
[Update] When I execute 'bundle update addressable', got this error: Fetching gem metadata from https://rubygems.org/........ Fetching gem metadata from https://rubygems.org/.. Resolving dependencies... Bundler could not find compatible versions for gem "launchy": In snapshot (Gemfile.lock): launchy (2.1.0)
In Gemfile: google-api-client (= 0.6.4) ruby depends on launchy (>= 2.1.1) ruby
Running bundle update will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
回答1:
The version of koala you are using required addressable-2.2.8, but google-api-client wants addressable-2.3.2 or higher. The latest version of koala does not specify a specific version of addressable, so try updating koala:
bundle update koala
来源：https://stackoverflow.com/questions/24689397/ruby-on-rails-gem-dependency-conflict-when-install-google-api-client