This abstracts over the separately installed dev-util/cargo and the
cargo that can be installed as part of rust and rust-bin from
1.27.1 forward.
Package-Manager: Portage-2.3.40, Repoman-2.3.9
--- /dev/null
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="Package manager for Rust"
+HOMEPAGE=""
+SRC_URI=""
+
+LICENSE=""
+SLOT="0"
+KEYWORDS="~amd64 ~arm64 ~x86"
+
+BDEPEND=""
+RDEPEND="|| (
+ =dev-lang/rust-${PV}*[cargo]
+ =dev-lang/rust-bin-${PV}*[cargo]
+ =dev-util/cargo-0.28.0*
+ )"
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+ <maintainer type="project">
+ <email>rust@gentoo.org</email>
+ <name>Rust Project</name>
+ </maintainer>
+</pkgmetadata>