Here's how to get language support for the Dart language in (Neo)Vim. Tools Needed I assume that you installed (Neo)Vim and the Dart language. For example, Arch has a community package that easily installs dart with your package manager of choice. Additional tools: ALE or a different plugin with Language Server support dart_language_server Vim Polyglot OR dart-vim-plugin (for general language support) (optional) VimCompletesMe or a different auto-complete plugin 1.