TOML language support for IntelliJ IDEA based IDEs
The plugin provides nothing but syntax highlighting at the moment.
To install plugin open Settings > Plugins > Browse repositories, and search for TOML.
There is also a nightly chanel, to use it you need to follow the instructions of adding additional plugin repository and paste the following URL: https://plugins.jetbrains.com/plugins/nightly/8195.
See Contributing in the IntellJ-Rust plugin.