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Rails: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2 (Gem::LoadError)

Here is my error:

rake aborted! Gem::LoadError: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2. Prepending `bundle exec` to your command may solve this. /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:34:in `block in setup' /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:19:in `setup' /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler.rb:119:in `setup' /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/setup.rb:7:in `<top (required)>' /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/boot.rb:4:in `<top (required)>' /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/application.rb:1:in `<top (required)>' /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/Rakefile:4:in `<top (required)>' LoadError: cannot load such file -- bundler/setup /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/boot.rb:4:in `<top (required)>' /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/application.rb:1:in `<top (required)>' /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/Rakefile:4:in `<top (required)>' (See full trace by running task with --trace) 

I can't run any rake tasks and this seems to be the root of all my other problems. It wasn't like this a couple days ago when I was running rake commands. Can anyone explain what's going on here and how to get my app back on track? I've hit a wall. Also, bundle exec doesn't fix the root of the problem for me. I never had to do that in the past and it's still not working now.

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Aaron Avatar asked Apr 25 '14 07:04

Aaron


1 Answers

EDIT 2: You should look at bundle update and change your workflow a little. Refer to this question for further assistance.


Original answer

This is a simple issue which happens when your gemset has a rake version that is newer than the version number your Gemfile.lock mentions.

As is mentioned in the error message, you can use bundle exec to get things working.

My solution in such cases is to just remove Gemfile.lock if I am not too worried other gem versions and their endless dependencies. Otherwise, you can try just removing the one line in Gemfile.lock which talks about the version of rake. run bundle install and the world should be a happy place again. (edit 2: Run bundle update --source instead of this. Don't do this.)

PS: Try using gemsets and organising your gems with rvm for different projects.

Edit

I prefer using rbenv now for managing installations and all gems for a project reside in vendor/bundle using bundle install --path option. Later scope every gem command with bundle exec.

Hence, rails s becomes bundle exec rails s. A little more typing is, in my opinion, better if it means that things will remain clean and conflicts such as this one don't happen.

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manu29.d Avatar answered Sep 19 '22 08:09

manu29.d