diff --git a/dev-ml/opam-common/Manifest b/dev-ml/opam-common/Manifest
new file mode 100644
index 0000000000000..3a42235d17485
--- /dev/null
+++ b/dev-ml/opam-common/Manifest
@@ -0,0 +1 @@
+DIST opam-2.2.1.tar.gz 1089671 BLAKE2B cd6a97c8c19d7866205b49f95bf4215d986b3ad8b5d1fe5c5fd52db9b8b9e0cff8559d478e18d99d89816bbf830910f182e4c1e80719ac29a3cd5c8299450a21 SHA512 17d7d83b9de118332c121b9d3aa2e48f62a6270ea23e730a536b0f4ff060df85238c7c4ab53a89bcc3b3193d52d14358831bd9bed30a4ac699e44e4c3003b8b0
diff --git a/dev-ml/opam-common/metadata.xml b/dev-ml/opam-common/metadata.xml
new file mode 100644
index 0000000000000..8ee8dbb519692
--- /dev/null
+++ b/dev-ml/opam-common/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>ml@gentoo.org</email>
+		<name>ML</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">ocaml/opam</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/dev-ml/opam-common/opam-common-2.2.1.ebuild b/dev-ml/opam-common/opam-common-2.2.1.ebuild
new file mode 100644
index 0000000000000..155f1bfdec12a
--- /dev/null
+++ b/dev-ml/opam-common/opam-common-2.2.1.ebuild
@@ -0,0 +1,43 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Core libraries for opam"
+HOMEPAGE="https://opam.ocaml.org/ https://github.com/ocaml/opam"
+SRC_URI="https://github.com/ocaml/opam/archive/${PV/_/-}.tar.gz -> opam-${PV}.tar.gz"
+S="${WORKDIR}/opam-${PV}"
+
+LICENSE="LGPL-2.1"
+SLOT="0/${PV}"
+KEYWORDS="~amd64"
+IUSE="+ocamlopt"
+RESTRICT="test" #sandbox not working
+
+RDEPEND="
+	dev-ml/jsonm:=[ocamlopt?]
+	dev-ml/ocamlgraph:=[ocamlopt?]
+	dev-ml/ocaml-sha:=[ocamlopt?]
+	dev-ml/opam-file-format:=[ocamlopt?]
+	dev-ml/re:=[ocamlopt?]
+	dev-ml/stdlib-shims:=[ocamlopt?]
+	dev-ml/swhid_core:=[ocamlopt?]
+	dev-ml/uchar:=[ocamlopt?]
+	dev-ml/uutf:=[ocamlopt?]
+"
+DEPEND="${RDEPEND}"
+BDEPEND="dev-ml/findlib"
+
+src_configure() {
+	:
+}
+
+src_compile() {
+	dune-compile opam-core opam-format
+}
+
+src_install() {
+	dune-install opam-core opam-format
+}