dev-lang/rust-bin: revbump 1.47.0

add more links to handle by eselect-rust
rework ebuild a bit for readability.

Package-Manager: Portage-3.0.8, Repoman-3.0.1
Signed-off-by: Georgy Yakovlev <[email protected]>

dev-lang/rust-bin/rust-bin-1.47.0-r1.ebuild

@@ -0,0 +1,157 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit bash-completion-r1 rust-toolchain toolchain-funcs multilib-minimal
+
+MY_P="rust-${PV}"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA"
+SLOT="stable"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~x86"
+IUSE="clippy cpu_flags_x86_sse2 doc rls rustfmt"
+
+DEPEND=""
+RDEPEND=">=app-eselect/eselect-rust-20190311"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+QA_PREBUILT="
+	opt/${P}/bin/*-${PV}
+	opt/${P}/lib/*.so
+	opt/${P}/lib/rustlib/*/bin/*
+	opt/${P}/lib/rustlib/*/lib/*.so
+	opt/${P}/lib/rustlib/*/lib/*.rlib*
+"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	default
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rls && components="${components},rls-preview,${analysis}"
+	use rustfmt && components="${components},rustfmt-preview"
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rls && symlinks+=( rls )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		mv -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}"
+		ln -v "${ED}/opt/${P}/bin/${i}-bin-${PV}" "${ED}/opt/${P}/bin/${i}"
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib"
+	MANPATH="${EPREFIX}/usr/lib/rust/man"
+	$(usex elibc_musl 'CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-C target-feature=-crt-static"' '')
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rls; then
+		echo /usr/bin/rls >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update --if-unset
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV},"
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}