Over a two-month period, contributed to the rust-lang/rust and rust-lang/rust-analyzer repositories by enhancing Windows deployment reliability and expanding cross-compilation support. Implemented static CRT linking for Windows MSVC targets in Rust, reducing DLL dependencies and standardizing build flags to simplify deployment and improve system stability. Later, developed the rust-mingw cross-compilation extension, enabling Windows ARM64 builds on x64 hosts without requiring MSVC, and updated the build manifest to streamline installation via rustup. This work leveraged expertise in Rust, build systems, and Windows development, addressing deployment challenges and broadening the toolchain’s cross-platform capabilities for system programming and developer workflows.