Add updated WSL2 Instructions

docs/linux_dependencies.md

@@ -23,8 +23,40 @@ Compiling with clang is also possible - replace the `g++` package with `clang`.
 
 ### Windows Subsystem for Linux (WSL 2)
 
-Graphics and audio need to be configured for them to work with WSL 2 backend.
-Please see the ubuntu [WSL documentation](https://wiki.ubuntu.com/WSL) on how to set up graphics and audio.
+WSL2's virtual GPU Driver only supports OpenGL, requiring you to cross-compile for Windows within WSL and then run the build on Windows. (See [#841](https://github.com/bevyengine/bevy/issues/841) and [microsoft/WSL#7790](https://github.com/microsoft/WSL/issues/7790))
+
+#### Dependencies
+
+First install the MinGW toolchain
+
+```bash
+sudo apt-get install mingw-w64
+```
+
+Add the rust target
+
+```bash
+rustup target add x86_64-pc-windows-gnu
+```
+
+#### Usage
+
+Place the following into `.cargo/config.toml` for your project
+
+```toml
+[build]
+target = "x86_64-pc-windows-gnu"
+```
+
+Alternatively to changing your config, when building or running specify the target manually
+
+```bash
+cargo build --target x86_64-pc-windows-gnu
+```
+
+```bash
+cargo run --target x86_64-pc-windows-gnu
+```
 
 ## [Fedora](https://getfedora.org/)