Use Mix to manage dependencies for different environments like development, test, and production. Specify environment-specific dependencies in your mix.exs file to ensure proper configuration.

Managing dependencies across different environments in Elixir is crucial for ensuring that your application behaves correctly in development, testing, and production. Mix, Elixir's built-in build tool, facilitates this by allowing you to specify environment-specific dependencies in your mix.exs file. Each environment can have its own set of dependencies, ensuring that only the necessary libraries are loaded based on the context. For example, in the deps function of your mix.exs, you can conditionally add dependencies by checking the current environment. Use the Mix.env() function to determine the current environment and adjust your dependencies accordingly. Additionally, it's a good practice to include testing libraries like ExUnit only in the test environment to avoid unnecessary bloat in production. To fetch the dependencies, run mix deps.get, and to update them, use mix deps.update. Regularly review your dependencies and ensure they are well-documented, making it easier for your team to manage and understand the project's requirements. By effectively managing dependencies across different environments, you can enhance the stability and performance of your Elixir applications.