diff --git a/sci-libs/symmetrica/Manifest b/sci-libs/symmetrica/Manifest
new file mode 100644
index 0000000000000..9370fd11f54e8
--- /dev/null
+++ b/sci-libs/symmetrica/Manifest
@@ -0,0 +1 @@
+DIST symmetrica-3.0.1.tar.xz 789336 BLAKE2B 88521356bdc006413e0922b49b23f345da96bbe8cb2a4a6ae12bf53fe46150078f086e6d1f6e514817453f2a868b6eb578b716c05f5459397ed8d766d321ec24 SHA512 1e4c42e1ae9fcdf246dff1c1f01522d6cd416c12302363f82356018847df2f64d2f5ea6256459832d195e8e333ae14743794d5a53346e92d8ba1bb1c0949c271
diff --git a/sci-libs/symmetrica/metadata.xml b/sci-libs/symmetrica/metadata.xml
new file mode 100644
index 0000000000000..3704ab7e98b1a
--- /dev/null
+++ b/sci-libs/symmetrica/metadata.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>mjo@gentoo.org</email>
+  </maintainer>
+  <!--
+      mjo: François maintained this package in the sage-on-gentoo overlay
+      long before I moved it into ::gentoo. You don't need an ACK from me
+      to merge his changes.
+  -->
+  <maintainer type="person">
+    <email>frp.bissey@gmail.com</email>
+    <name>François Bissey</name>
+  </maintainer>
+  <maintainer type="project">
+    <email>proxy-maint@gentoo.org</email>
+    <name>Proxy Maintainers</name>
+  </maintainer>
+
+  <upstream>
+    <remote-id type="gitlab">https://gitlab.com/sagemath/symmetrica</remote-id>
+  </upstream>
+</pkgmetadata>
diff --git a/sci-libs/symmetrica/symmetrica-3.0.1.ebuild b/sci-libs/symmetrica/symmetrica-3.0.1.ebuild
new file mode 100644
index 0000000000000..eab633507c887
--- /dev/null
+++ b/sci-libs/symmetrica/symmetrica-3.0.1.ebuild
@@ -0,0 +1,24 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="C library for representation theory, combinatorics, and more"
+HOMEPAGE="https://gitlab.com/sagemath/symmetrica"
+SRC_URI="https://gitlab.com/sagemath/symmetrica/uploads/b3d8e1ad5ab2449c30bbc3147e7a5e53/symmetrica-3.0.1.tar.xz"
+
+LICENSE="ISC"
+SLOT="0/2"
+KEYWORDS="~amd64"
+IUSE="doc"
+
+DOCS=( README.md )
+
+src_configure(){
+	econf $(use_enable doc)
+}
+
+src_install(){
+	default
+	find "${ED}" -name '*.la' -delete || die
+}