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Native Node Modules

For some features, the desktop version of Riot can make use of native Node modules. These allow Riot to integrate with the desktop in ways that a browser cannot.

While native modules enable powerful new features, they must be complied for each operating system. For official Riot releases, we will always build these modules from source to ensure we can trust the compiled output. In the future, we may offer a pre-compiled path for those who want to use these features in a custom build of Riot without installing the various build tools required.

Do note that compiling a module for a particular operating system (Linux/macOS/Windows) will need to be done on that operating system. Cross-compiling from a host OS for a different target OS may be possible, but we don't support this flow with Riot dependencies at this time.

At the moment, we need to make some changes to the Riot release process before we can support native Node modules at release time, so these features are currently disabled by default until that is resolved. The following sections explain the manual steps you can use with a custom build of Riot to enable these features if you'd like to try them out.

Adding Seshat for search in E2E encrypted rooms

Seshat is a native Node module that adds support for local event indexing and full text search in E2E encrypted rooms.

Since Seshat is written in Rust, the Rust compiler and related tools need to be installed before installing Seshat itself. To install Rust please consult the official Rust documentation.

Seshat also depends on the SQLCipher library to store its data in encrypted form on disk. You'll need to install it via your OS package manager.

After installing the Rust compiler and SQLCipher, Seshat support can be added using yarn inside the electron_app/ directory:

yarn add matrix-seshat

You will have to rebuild the native libraries against electron's version of of node rather than your system node, using the electron-build-env tool. This is also needed to when pulling in changes to Seshat using yarn link. Again from the electron_app/ directory:

yarn add electron-build-env

Recompiling Seshat itself can be done like so:

yarn run electron-build-env -- --electron 6.1.1 -- neon build matrix-seshat --release

Please make sure to include all the -- as well as the --release command line switch at the end. Modify your electron version accordingly depending on the version that is installed on your system.

After this is done the Electron version of Riot can be run from the main folder as usual using:

yarn electron