diff --git a/sci-electronics/slang/Manifest b/sci-electronics/slang/Manifest
new file mode 100644
index 0000000000..db3d590541
--- /dev/null
+++ b/sci-electronics/slang/Manifest
@@ -0,0 +1 @@
+DIST slang-1.0.tar.gz 1239664 BLAKE2B 98355987b5c355eb914dd0d38c7441d5d39b7a0259e557d9cfd6271fd35aab642db6036d55228f75522fef0c31a4c82dea4d09cdb04ea33c60d843a3ca14caf0 SHA512 25ef7f5abb1b73928f61b853db5462baf72077a47daa9419311aba1f8fdca0bd499518c2f64dfff95b3c0671e52f2b1cd37edb7d1c74fb983b74de08fe7eea37
diff --git a/sci-electronics/slang/metadata.xml b/sci-electronics/slang/metadata.xml
new file mode 100644
index 0000000000..a2f50fb62f
--- /dev/null
+++ b/sci-electronics/slang/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>vowstar@gmail.com</email>
+		<name>Huang Rui</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">MikePopoloski/slang</remote-id>
+	</upstream>
+	<longdescription lang="en">
+	slang is a software library that provides various components for lexing,
+	parsing, type checking, and elaborating SystemVerilog code. It comes with
+	an executable tool that can compile and lint any SystemVerilog project,
+	but it is also intended to be usable as a front end for synthesis tools,
+	simulators, linters, code editors, and refactoring tools.
+	slang is the fastest and most compliant SystemVerilog frontend
+	(according to the open source chipsalliance test suite).
+	</longdescription>
+</pkgmetadata>
diff --git a/sci-electronics/slang/slang-1.0.ebuild b/sci-electronics/slang/slang-1.0.ebuild
new file mode 100644
index 0000000000..1e1d7d743d
--- /dev/null
+++ b/sci-electronics/slang/slang-1.0.ebuild
@@ -0,0 +1,59 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="8"
+
+PYTHON_COMPAT=( python3_{8..11} )
+inherit cmake python-r1
+
+DESCRIPTION="SystemVerilog compiler and language services"
+HOMEPAGE="
+	https://sv-lang.com
+	https://github.com/MikePopoloski/slang
+"
+
+if [[ "${PV}" == "9999" ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/MikePopoloski/${PN}.git"
+else
+	SRC_URI="https://github.com/MikePopoloski/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64 ~arm64 ~riscv ~x86"
+	S="${WORKDIR}/${P}"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+IUSE="python test"
+REQUIRED_USE=" ${PYTHON_REQUIRED_USE} "
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	${PYTHON_DEPS}
+	dev-libs/libfmt
+"
+
+DEPEND="
+	${RDEPEND}
+"
+
+src_configure() {
+	python_setup
+
+	local mycmakeargs=(
+		-D CMAKE_INSTALL_LIBDIR="${EPREFIX}/usr/$(get_libdir)"
+		-D BUILD_SHARED_LIBS=ON
+		-D SLANG_INCLUDE_PYLIB=$(usex python)
+		-D SLANG_INCLUDE_TESTS=$(usex test)
+	)
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+	# fix libdir path
+	if [[ "$(get_libdir)" != "lib" ]] ; then
+		mv "${D}"/usr/lib "${D}"/usr/"$(get_libdir)" || die
+	fi
+	# file collisions of internal fmt
+	rm -r "${D}"/usr/include/fmt || die
+}
diff --git a/sci-electronics/slang/slang-9999.ebuild b/sci-electronics/slang/slang-9999.ebuild
new file mode 100644
index 0000000000..1e1d7d743d
--- /dev/null
+++ b/sci-electronics/slang/slang-9999.ebuild
@@ -0,0 +1,59 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="8"
+
+PYTHON_COMPAT=( python3_{8..11} )
+inherit cmake python-r1
+
+DESCRIPTION="SystemVerilog compiler and language services"
+HOMEPAGE="
+	https://sv-lang.com
+	https://github.com/MikePopoloski/slang
+"
+
+if [[ "${PV}" == "9999" ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/MikePopoloski/${PN}.git"
+else
+	SRC_URI="https://github.com/MikePopoloski/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64 ~arm64 ~riscv ~x86"
+	S="${WORKDIR}/${P}"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+IUSE="python test"
+REQUIRED_USE=" ${PYTHON_REQUIRED_USE} "
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	${PYTHON_DEPS}
+	dev-libs/libfmt
+"
+
+DEPEND="
+	${RDEPEND}
+"
+
+src_configure() {
+	python_setup
+
+	local mycmakeargs=(
+		-D CMAKE_INSTALL_LIBDIR="${EPREFIX}/usr/$(get_libdir)"
+		-D BUILD_SHARED_LIBS=ON
+		-D SLANG_INCLUDE_PYLIB=$(usex python)
+		-D SLANG_INCLUDE_TESTS=$(usex test)
+	)
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+	# fix libdir path
+	if [[ "$(get_libdir)" != "lib" ]] ; then
+		mv "${D}"/usr/lib "${D}"/usr/"$(get_libdir)" || die
+	fi
+	# file collisions of internal fmt
+	rm -r "${D}"/usr/include/fmt || die
+}