Currently rustc and clippy-driver are hardcoded. It would be nice if arbitrary rustc drivers would be supported. This includes cargo-miri rustc, cg_clif and any other program that has a rustc compatible command line interface. One way would be to first check for a C compiler and if the output is error: Unrecognized option: 'E' instead attempt to detect a rustc compiler.

cc https://github.com/bjorn3/rustc_codegen_cranelift/issues/1091