How do I use a specific version of a gem?

How do I use a specific version of a gem?

Use `gem install -v` You may already be familiar with gem install , but if you add the -v flag, you can specify the version of the gem to install. Using -v you can specify an exact version or use version comparators.

How do I fix resolve bundler Cannot find compatible versions for gem?

I could solve it in only one way:

1. Commented out all the gems except the rails gem.
2. Bundle (successfully).
3. Uncommented the remaining gems and again the bundle (successfully too).

How do I specify a Gemfile version?

There are several ways to specify gem versions: Use a specific version: gem “name-of-gem”, “1.0” . You can find specific versions on Rubygems.org (provided that’s the source you”re using) by searching for your gem and looking at the “Versions” listed. Use a version operator: gem “name-of-gem”, “>1.0” .

How can you build your own Ruby gem?

Creating a Gem From Scratch

1. Create the basic file structure of the gem: Fire up your shell and create the directories that will be needed in your gem: $ mkdir awesome_gem $ cd awesome_gem $ mkdir lib.
2. Create the gemspec.
3. Add some code.
4. Generate the gem file.
5. Install the gem.
6. Add The Gem to Another Ruby Program.

Where are RubyGems stored locally?

By default, binaries installed by gem will be placed into: /usr/local/lib/ruby/gems/3.1.

How do I downgrade my gem version?

If you want to automate it in a script (I had the same problem after a gem update ), just do the following:

1. Install your favored version (if you don’t have already) gem install compass -v 1.2.3.
2. Uninstall newer versions. gem uninstall compass -v ‘>1.2.3’ –force.

How do I change my bundler version?

How to update the bundler version in a Gemfile. lock

1. Install the latest bundler version: Copy. gem install bundler Fetching bundler-2.3.5.gem Successfully installed bundler-2.3.5 1 gem installed.
2. Update the bundler version in Gemfile.lock : Copy. bundle update –bundler.
3. Confirm it worked: Copy.

What is the gem command in Ruby?

The gem command is used to manage your gem installation. In this video, we explore some of the different sub commands of ruby gems.

What is must Gemfile in Ruby?

Must be inside a folder with a Gemfile. Displays a list of outdated gems in the current project. Can use the –groups option to group them. Runs an irb session with the gems from the current project’s Gemfile. You’ve learned about RubyGems, the package system for Ruby.

How do I find the version of a gem in Ruby?

The gem version itself is defined as a constant in lib/ /version.rb. Here’s an example gemspec: The require_paths array is where Ruby will look for your gem files when you require them.

Why do we use RubyGems?

Why do we use gems? A specification (“.spec”) file that comes with every gem describes dependencies (other required gems) so the code has everything it needs to work Thanks to RubyGems, we have a rich ecosystem of helpful libraries just one gem install away!