12c12
< SRC_URI="$(rust_all_arch_uris ${MY_P})"
---
> SRC_URI="$(rust_all_arch_uris ${MY_P}) rust-src? ( https://static.rust-lang.org/dist/2021-11-01/rust-src-${PV}.tar.xz )"
17c17
< IUSE="clippy cpu_flags_x86_sse2 doc prefix rls rustfmt"
---
> IUSE="clippy cpu_flags_x86_sse2 doc prefix rls rust-src rustfmt"
83a84,94
> 
> 	# Rust component 'rust-src' is extracted from separate archive
> 	if use rust-src; then
> 		${WORKDIR}/rust-src-${PV}/install.sh \
> 			--components="rust-src" \
> 			--disable-verify \
> 			--prefix="${ED}/opt/${P}" \
> 			--mandir="${ED}/opt/${P}/man" \
> 			--disable-ldconfig \
> 			|| die
> 	fi