elm-vim
A comprehensive Vim plugin for Elm development with syntax highlighting, completion, formatting, and build tools.
What is elm-vim?
elm-vim is a Vim plugin that provides comprehensive support for developing applications in the Elm programming language. It integrates Elm's core toolchain—including compilation, testing, formatting, and documentation lookup—directly into the Vim editor, streamlining the development workflow.
Elm developers who prefer using Vim as their primary code editor and want a tightly integrated development environment with minimal context switching.
It offers a unified, feature-complete Elm development experience within Vim, reducing reliance on external tools and terminals while maintaining compatibility with popular Vim plugins like Ale and Syntastic.
Overview
Elm plugin for Vim
Use Cases
Best For
- Writing Elm code with real-time syntax highlighting and indentation
- Automatically formatting Elm source files on save
- Looking up function documentation without leaving the editor
- Running Elm tests and builds directly from Vim
- Using Elm REPL for interactive experimentation
- Integrating Elm development with existing Vim plugin ecosystems
Not Ideal For
- Developers using non-Vim editors like VS Code or IntelliJ IDEA, where dedicated Elm extensions offer more integrated GUI features.
- Teams requiring advanced graphical debugging tools; elm-vim's debugging is limited to REPL integration and error reporting without full debugger support.
- Projects prioritizing minimal editor setup; elm-vim requires installing multiple global Elm tools and managing plugin conflicts like with vim-polyglot.
Pros & Cons
Pros
Seamlessly integrates core Elm tools like elm-format for auto-formatting and elm-oracle for documentation lookup, as evidenced by the required installations and features list in the README.
Provides default mappings for tasks like compilation and testing but allows full customization by disabling them with `g:elm_setup_keybindings`, offering flexibility without lock-in.
Works out of the box with popular Vim plugins like Ale and Syntastic for enhanced linting, as detailed in the Integration section, ensuring a smooth workflow in existing setups.
Covers all essential Elm development aspects from syntax highlighting to REPL integration, as listed in the Features section, reducing the need for external tools.
Cons
Requires installing Elm Platform, elm-test, elm-oracle, and elm-format globally via npm, adding multiple manual steps before the plugin is fully operational, as noted in the Requirements section.
Explicitly warns about conflicts with vim-polyglot, necessitating manual configuration to disable its Elm plugin, which can be error-prone and confusing for users.
Focuses on basic to intermediate tools; lacks advanced capabilities such as refactoring support or graphical debugging interfaces, relying on external tool integration for more complex tasks.
Frequently Asked Questions
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