dev-lang/rust{,-bin}: port to llvm-r1 and slot (-r100)

Port to llvm-r1 to gain the fancy new `llvm_slot_{x}` USE flags
which we use in the rust eclass to force a closer dependency on
specific LLVM slots.

Since Rust in Gentoo is only ever built against the one LLVM slot
we are able to simplify the LLVM logic in the Rust ebuilds and use
our knowledge of the LLVM -> Rust version mapping to enable
slots for dev-lang/rust in a usable manner.

Since Rust is now slotted and not managed entirely by eselect-rust
each slot needs to be added to LDPATH.

We also drop the `profiler` USE as it's inconsistent with what
upstream ship by default and casues issues where other package's
build systems assume that it exists.

This commit also introduces dev-lang/rust-common which handles bash
completions for slotted Rust.

dev-lang/rust-bin:

`LLVM_OPTIONAL` is used as we don't need to consume LLVM,
we really just want the free IUSE.

Closes: https://bugs.gentoo.org/941146
Signed-off-by: Matt Jolly <kangie@gentoo.org>

20 files changed, 8230 insertions, 0 deletions

diff --git a/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild
new file mode 100644
index 000000000000..1c40bfad383f
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild
@@ -0,0 +1,232 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 16 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-08-03/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz -> ${MY_P}-sparc64-unknown-linux-gnu.sam.tar.xz ) "
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4 UoI-NCSA"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust-bin:stable
+"
+
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+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() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${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="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}/bin/bash")
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${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}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		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/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_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 rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${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/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${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
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild
new file mode 100644
index 000000000000..c439536ef6bd
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild
@@ -0,0 +1,242 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-12-07/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+#SRC_URI+=" mips? (
+#	abi_mips_o32? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+#	)
+#	abi_mips_n64? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+#	)
+#)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust-bin:stable
+"
+
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(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() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${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="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}/bin/bash")
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${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}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		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/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_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 rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${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/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${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
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild
new file mode 100644
index 000000000000..10b3ef1a7932
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild
@@ -0,0 +1,242 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-12-28/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+#SRC_URI+=" mips? (
+#	abi_mips_o32? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+#	)
+#	abi_mips_n64? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+#	)
+#)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust-bin:stable
+"
+
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(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() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${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="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${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}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		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/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_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 rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${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/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${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
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild
new file mode 100644
index 000000000000..c973e8b738de
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild
@@ -0,0 +1,244 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-03-28/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust-bin:stable
+"
+
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(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() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,rust-demangler-preview,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-demangler
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)