diff --git a/dev-embedded/yosys/Manifest b/dev-embedded/yosys/Manifest
new file mode 100644
index 0000000000..55f569e1f2
--- /dev/null
+++ b/dev-embedded/yosys/Manifest
@@ -0,0 +1,2 @@
+DIST berkeley-abc-ed90ce20df9c7c4d6e1db5d3f786f9b52e06bab1.tar.gz 5755034 BLAKE2B eef98b8768556c2a975fb1dd4f697a7ba7ac2adf305f477e5d0071b6873379eb5fe021a8cc20097af1156173af72f896a5f3c687796ae7c564e8d2af4829d6a3 SHA512 d71989603d2580c3db88c4a44a95ac89266c19a05cb49b62d117c9457166fdd1313bce7ac617beea0bd0bde47c7891c99b248ee77754e25f403f5f886ea7cfd4
+DIST yosys-c9555c9adeba886a308c60615ac794ec20d9276e.tar.gz 1675435 BLAKE2B 9aca3d0e3efe1d24de5aabd6f12ccf7a8fe4f1db5f5dc2a3a1e70c67538f59c1f364cb6a9b3f79406371756f9118e5a1160d0c21d367a5fe4927b4b5d21495eb SHA512 5bba45de487a1299f7f7bacc3b538e80a91265b075112aeac17af6895580c3cf21712df6fffd7250fdf5b51d9f235c1cb0433deda6af2c404b6156c5a3c5c44e
diff --git a/dev-embedded/yosys/metadata.xml b/dev-embedded/yosys/metadata.xml
new file mode 100644
index 0000000000..a26cdbcec5
--- /dev/null
+++ b/dev-embedded/yosys/metadata.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<longdescription lang="en">
+	</longdescription>
+	<upstream>
+		<remote-id type="github">cliffordwolf/yosys</remote-id>
+	</upstream>
+	<use>
+		<flag name="abc">Build with Berkeley ABC support</flag>
+	</use>
+</pkgmetadata>
diff --git a/dev-embedded/yosys/yosys-0.9_p20200324-r1.ebuild b/dev-embedded/yosys/yosys-0.9_p20200324-r1.ebuild
new file mode 100644
index 0000000000..8101aafdf6
--- /dev/null
+++ b/dev-embedded/yosys/yosys-0.9_p20200324-r1.ebuild
@@ -0,0 +1,55 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{8,9} )
+inherit eutils python-any-r1
+
+ABC_COMMIT="ed90ce20df9c7c4d6e1db5d3f786f9b52e06bab1"
+EGIT_COMMIT="c9555c9adeba886a308c60615ac794ec20d9276e"
+
+SRC_URI="https://github.com/cliffordwolf/${PN}/archive/${EGIT_COMMIT}.tar.gz -> ${PN}-${EGIT_COMMIT}.tar.gz https://github.com/berkeley-abc/abc/archive/${ABC_COMMIT}.tar.gz -> berkeley-abc-${ABC_COMMIT}.tar.gz"
+
+DESCRIPTION="Yosys - Yosys Open SYnthesis Suite"
+HOMEPAGE="http://www.clifford.at/icestorm/"
+LICENSE="ISC"
+
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="+abc"
+
+RDEPEND="
+	sys-libs/readline:=
+	dev-libs/libffi:=
+	dev-vcs/git
+	dev-lang/tcl:="
+
+DEPEND="
+	${PYTHON_DEPS}
+	sys-devel/bison
+	sys-devel/flex
+	sys-apps/gawk
+	virtual/pkgconfig
+	${RDEPEND}"
+
+S="${WORKDIR}/${PN}-${EGIT_COMMIT}"
+
+src_prepare() {
+	ln -s "${WORKDIR}/abc-${ABC_COMMIT}" abc
+	sed "s/^ABCREV = .*/ABCREV = default/g" -i Makefile
+	default
+}
+
+src_configure() {
+	emake config-gcc
+	echo "ENABLE_ABC := $(usex abc 1 0)" >> "${S}/Makefile.conf"
+}
+
+src_compile() {
+	emake PREFIX="${EPREFIX}/usr"
+}
+
+src_install() {
+	emake PREFIX="${ED}/usr" STRIP=true install
+}
diff --git a/dev-embedded/yosys/yosys-9999.ebuild b/dev-embedded/yosys/yosys-9999.ebuild
new file mode 100644
index 0000000000..1f0f831406
--- /dev/null
+++ b/dev-embedded/yosys/yosys-9999.ebuild
@@ -0,0 +1,67 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=(  python3_{7..9} )
+
+inherit git-r3 python-r1 multilib
+
+DESCRIPTION="RTL synthesis toolkit"
+HOMEPAGE="https://yosyshq.net/yosys/"
+SRC_URI=""
+EGIT_REPO_URI="https://github.com/YosysHQ/yosys.git"
+EGIT_BRANCH="master"
+
+
+LICENSE="ISC"
+SLOT="0"
+KEYWORDS=""
+PROPERTIES="live"
+IUSE="+tcl +readline +zlib +abc"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+
+BDEPEND="
+  sys-devel/gcc[cxx]
+  sys-devel/bison
+  sys-devel/flex
+  sys-apps/gawk
+  virtual/pkgconfig
+"
+
+RDEPEND="
+  dev-libs/libffi
+  media-gfx/xdot
+  media-gfx/graphviz
+  dev-libs/boost[python]
+  tcl? ( dev-lang/tcl:= )
+  readline? ( sys-libs/readline:= )
+  zlib? ( sys-libs/zlib )
+  abc? ( sci-mathematics/abc[static-libs] )
+"
+
+DEPEND="
+  ${PYTHON_DEPS}
+  ${RDEPEND}
+"
+
+
+src_configure() {
+  emake config-gcc
+
+  echo "ENABLE_TCL := $(usex tcl 1 0)" >> "${S}"/Makefile.conf
+  echo "ENABLE_READLINE := $(usex readline 1 0)" >> "${S}"/Makefile.conf
+  echo "ENABLE_ZLIB := $(usex zlib 1 0)" >> "${S}"/Makefile.conf
+  echo "ENABLE_ABC := $(usex abc 1 0)" >> "${S}"/Makefile.conf
+  use abc && echo "ABCEXTERNAL := ${EPREFIX}/usr/bin/abc" >> "${S}"/Makefile.conf
+}
+
+
+src_compile() {
+  emake PREFIX="${EPREFIX}/usr"
+}
+
+
+src_install() {
+  emake PREFIX="${ED}/usr" install
+}