For console development (Sony, Nintendo, XBox), anything but C++ has never seemed like an option because all of the development tools and libraries provided for

For console development (Sony, Nintendo, XBox), anything but C++ has never seemed like an option because all of the development tools and libraries provided for working on those consoles are C++ centric. But I'm curious if there are any console development companies that are successfully using Rust or other languages which perhaps can link with C++ libraries? We use C# in our studio for tools, and are able to link it with our game C++ so that we can run some of the game's subsystems within the tools (e.g. animation engine) but shipping the game with C# code is not an option for several reasons, performance being the most important, but also we need to build our game for the console using CLang/LLVM, and I suspect it's not possible to write C# which interfaces with C++ using LLVM, only with Microsoft's compiler.