# Launch Build Demo This build workflow is expressed as Rust source code. It uses `env!("linux")`, recognizes `env!("windows")` when a Windows development node is attached, spawns debugger-visible virtual tasks, and returns portable artifact and source handles instead of moving large bytes through task arguments. The Linux environment is defined by `envs/linux/Containerfile`. The Windows environment is a user-attached development contract and does not claim secure managed Windows sandboxing. Inspect the bundle metadata: ```bash clusterflux bundle inspect --project examples/launch-build-demo ```