Enable sccache for Rust by setting the RUSTC_WRAPPER environment variable to sccache before running cargo build.
Set the RUSTC_WRAPPER environment variable to sccache before running your build commands to automatically cache compilations.
export RUSTC_WRAPPER=sccache
cargo build
This wraps the rustc compiler calls (like those in rustc_codegen_llvm or rustc_codegen_ssa) so sccache can store and retrieve object files, speeding up subsequent builds.
sccache acts as a smart middleman between your build tool and the Rust compiler. It remembers how you compiled code before, so if you haven't changed the source, it reuses the old result instead of compiling again. Think of it like a browser cache for your code, saving you time on repetitive tasks.