Replit has revamped its dependency management to allow users to configure multiple languages in one workspace, consolidating language support, packages, and system dependencies into a new Dependencies pane. This change aims to simplify the process of setting up projects without requiring extensive configuration. Users can leverage System Modules to install language servers, formatters, and packagers for specific languages, with Nix providing native program and library support. The updated tool also streamlines import management, allowing users to manage imported packages across languages, making it easier to handle multiple languages and project dependencies.