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

Question 1

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.

Question 2

A simple solution that worked for me is to simply run bundle update rake.

Question 3

You can use rubygems-bundler to solve this. Run the following commands:

$ gem install rubygems-bundler

$ gem regenerate_binstubs

Then try your rake again.

Question 4

I had a similar issue and I was skeptical about removing a line from my Gemfile.lock, it seemed hacky and the inconvenience of prepend bundle exec to every rake command was not an option either. I fixed this by first going into my Gemfile.lock to see what version of rake was there (in my case it was 11.1.2). My thought was to uninstall rake and install this version. Running gem uninstall rake gave this output:

Select gem to uninstall:

rake-10.5.0

rake-11.1.1

rake-11.1.2

rake-11.2.2

rake-11.3.0

All versions

I uninstalled both rake-11.2.2 and rake-11.3.0. That fixed my problem

Question 5

Use this:

gem install rake -v "version-you-want"

Question 6

My error message:

~ $ rake db:migrate                                                                                                                                                                            [2.6.5][10:21:00]
rake aborted!
Gem::LoadError: You have already activated rake 12.3.2, but your Gemfile requires rake 13.0.1. Prepending `bundle exec` to your command may solve this.
/Users/torvalds/workspace/ekohe/whitespace/config/boot.rb:5:in `<top (required)>'
/Users/torvalds/workspace/ekohe/whitespace/config/application.rb:3:in `require_relative'
/Users/torvalds/workspace/ekohe/whitespace/config/application.rb:3:in `<top (required)>'
/Users/torvalds/workspace/ekohe/whitespace/Rakefile:6:in `require_relative'
/Users/torvalds/workspace/ekohe/whitespace/Rakefile:6:in `<top (required)>'
(See full trace by running task with --trace)

I am using the rbenv to manage my Ruby environment.

My global Ruby version is as know as the default Ruby version is 2.7.1, because I set it as rbenv global 2.7.1. However, my rake under Ruby 2.7.1 is 12.3.2

~ $ rake --version

rake, version 12.3.2

My project Ruby version is 2.6.5. however, my rake under Ruby 2.6.5 in my project is 13.0.1

~ $ bundle exec rake --version

rake, version 13.0.1

so I have to uninstall global rake

~ $ gem uninstall rake

and reinstall it back

~ $ gem install rake

Fetching rake-13.0.1.gem
Successfully installed rake-13.0.1
1 gem installed

it works! ~~~

I'm not sure whether it will have an influence on other projects. However, so far it works.

Question 7

According to this solution (that worked for me) : https://stackoverflow.com/a/23668399/4260090

You can solve it by using rubygems-bundler

Type these commands in your terminal :

$ gem install rubygems-bundler
$ gem regenerate_binstubs

It should work now

Question 8

Try to install nodejs, this was solved my problem.

If you're on ubuntu run this command.

sudo apt-get install nodejs

Question 9

I tried another way which is delete Gemfile.lock then run bundle install. After that I run rake db:migrate. And everything works fine.

Although I don't think remove Gemfile.lock is bad practice, but may be; who know.

Question 10

As mentioned on earlier answers 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.

The easiest way to debug this is to run bundle update.

The other ways could be to remove Gemfile.lock and running bundle install or simply deleting the line in Gemfile.lock that corresponds to the rake version and try bundle install. But this might sometimes corrupt the Gemfile. I would prefer the first method because it is the safest and the easiest.

Question 11

Go in the Gemfile.lock, find the rake file and update the version there.

I got this error:

Gem::LoadError: You have already activated rake 11.2.2, but your Gemfile requires rake 11.1.2. Prepending bundle exec to your command may solve this.

What I did was to change the version of rake in the Gemfile.lock from: rake (11.1.2) to rake (11.2.2).

Everything worked fine after that.

Question 12

I had the same error:

You have already activated rake 12.0.0, but your Gemfile requires rake 11.3.0. Prepending "bundle exec" to your command may solve this.

I solved it by running bundle update

this updated the rake version to my activated rake version and everything worked I hope that works for you!

Question 13

I meet the similar problem. My solution is change the line of rake version "gem 'rake', '~> 10.3'" in file Gemfile, delete Gemfile.lock and run 'bundler install', the new Gemfile.lock will show the new version 10.3.1. Then everything will be fine.

Question 14

I have fixed by simply prepending bundle exec as

"bundle exec rake db:create" or migrate

Question 15

I experienced this issue:

Here's my solution:

Solution 1:

This solution works a lot of the time, simply update the gem causing the issue, say the gem is rack

bundle update rack

Solution 2:

In some cases Solution 1 may not work, and you will need to edit your Gemfile.lock file.

Simply, open your Gemfile.lock file and then change the version to the update requested.

In my case, the gem was rack, I had rack 2.0.7 defined in my Gemfile.lock file, but my application required rack 2.1.2, I simply had to modify it to rack 2.1.2 in the Gemfile.lock file.

I then had to uninstall the previous version of rack which is rack 2.0.7

 gem uninstall rack -v 2.0.7

And finally installed the new gem in production

bundle install --without development test

Solution 3:

In very rare cases Solution 1 and Solution 2 may not work, and you will need to edit your Gemfile before updating the gem.

In my case, the gem was puma, I had puma ~> 3.11 defined in my Gemfile, but my application required puma ~> 4.3.1. At this point running bundle update puma and editing my Gemfile.lock file didn't work, since puma ~> 3.11 version specified in the Gemfile would not allow an update to puma ~> 4.3.1.

I simply had to change the version of puma in the Gemfile to puma ~> 4.3.1 and then ran the command.

bundle update puma

Solution 4:

If the version of rake that your Gemfile requires is less than the rake version activated, and you do not want to update rake, then you can as well run the command below to remove the version of rake that is activated:

gem list rake
gem uninstall rake

and then select the version of rake you want to uninstall.

That's all.

I hope this helps