bundler

Bundler manages Ruby gem dependencies by resolving versions and applying constraints in a Gemfile. It automates dependency resolution to prevent version conflicts, ensuring consistent environments for development, testing, and deployment.

Reproducible Ruby environments are achieved by maintaining a lockfile that records exact gem versions. Bundler generates and maintains this lockfile during bundle install, keeping environment consistency across all team members and deployment stages.

To set up Ruby dependencies, create a Gemfile in your project root and run bundle install. This process reads the Gemfile, resolves dependencies, installs the required gems, and generates a lockfile for future consistency.

Yes, Bundler supports gem group management for development, test, and production environments. You can categorize gems in the Gemfile to ensure specific dependencies are only loaded in their intended environments, optimizing setup and performance.

Running bundle update modifies the lockfile by fetching the latest compatible gem versions allowed by your version constraints. It re-resolves dependencies and updates the lockfile to reflect the newly installed versions across your environment.

Yes, using Bundler in a Rails project locks rails and related gems to compatible versions across all stages. This dependency management prevents works on my machine issues by enforcing strict version constraints and lockfile consistency.