Patronus is library that unifies APIs of various grammar checkers to simplify their integration into applications.

• patronus – main codebase, implemented as a Rust library
• patronus-capi – C API, intended to be used by applications written in other languages
• patronus-provider – Rust library providing data types for implementing custom providers
• providers – default providers

Before starting the build PATRONUS_PROVIDER_DIR environment variable should be set to the path where providers will be looked up; on Linux it will probably be /usr/lib/patronus. This path will be compiled into the library.