Use rvmrc or ruby-version file to set a project gemset with RVM?

🧐 RVMRC vs .ruby-version: Which one should you use?

If you're using RVM (Ruby Version Manager) to manage your Ruby versions and gemsets for each of your Rails projects, you might have come across the question of whether to use the .rvmrc file or the .ruby-version file to set your project's gemset. 🤔

The Dilemma 💭

Let's first understand the predicament. You have a .rvmrc file in your project directory that automatically selects the appropriate Ruby version and gemset whenever you navigate into that directory using cd. However, after updating RVM to version 1.19.0 or later, you receive a warning message. It states that using .rvmrc files requires trusting them, reduces performance, and conflicts with other Ruby managers. It suggests switching to .ruby-version files, or ignoring the warnings using certain rvm commands.

Now you're left with a choice: should you continue with the tried-and-true .rvmrc file, or make the switch to the recommended .ruby-version file? 🤷‍♂️

The Solution ✅

The optimal choice depends on your specific use case and preferences. Here are a few factors to consider:

1. Compatibility with Ruby Managers

If you plan on using multiple Ruby managers, such as RVM and rbenv, or switching between different Ruby managers in the future, it's best to migrate to the .ruby-version file. This file format is more widely supported across different Ruby version managers, ensuring seamless compatibility.

2. Performance Impact

The warning message mentioned that using .rvmrc files can lead to slower performance. This is due to the additional overhead of trusting and executing those files. If performance is a concern for you, you may want to switch to using .ruby-version files to optimize your project's setup time.

3. Trust and Security

Using .rvmrc files requires trusting them, as the warning message suggests. If you're unsure about the contents of the .rvmrc file or the security implications, migrating to the .ruby-version file can provide a more secure environment, as it is a simpler and more direct approach.

Making the Switch 🔄

If you've decided to switch to using .ruby-version files, here's what you need to do:

1. Open your terminal and navigate to the project directory where you currently have the .rvmrc file.

2. Run the following command:

   rvm rvmrc to .ruby-version

   This command converts your existing .rvmrc file to a .ruby-version file. You can now safely remove the .rvmrc file from your project directory.

3. Finally, commit and push the changes to your version control system (e.g., Git) if needed.

Wrap Up and Act! 🎉

Congratulations! You've successfully migrated from using the .rvmrc file to the .ruby-version file. 🥳

Remember, the choice between .rvmrc and .ruby-version ultimately depends on your needs and preferences. Consider the compatibility, performance, and security aspects before making a decision.

Now, it's time to take action! Share your experience with switching to .ruby-version on social media using the hashtag #RVMRCvsRubyVersion and let others know what you've learned. Engage with your fellow developers and start a discussion in the comments below about your experiences with RVM and gemset management.

Happy coding! 😄👩‍💻👨‍💻