diff --git a/dev-ml/xapi-stdext/Manifest b/dev-ml/xapi-stdext/Manifest
new file mode 100644
index 0000000000..f4e06be83d
--- /dev/null
+++ b/dev-ml/xapi-stdext/Manifest
@@ -0,0 +1 @@
+DIST xapi-stdext-4.18.0.tar.gz 52297 BLAKE2B f0f4e0f2453b9d98a0fcbd90437cc173771164f18dca3dcc7a05afe1ddccb14a08f192184ab9bddbcfca14f8687cd935000c0ad26ea4adceece51df712cf5579 SHA512 11267f9adc7676724ef7e0a0e1eb670c7234216d45d9566eb09fafe09728c9da5d1ac065afa5aec73895c81d6e62f1c16cabc48c7c6473002e0d58fd7dbc97ee
diff --git a/dev-ml/xapi-stdext/metadata.xml b/dev-ml/xapi-stdext/metadata.xml
new file mode 100644
index 0000000000..2b8c3392c6
--- /dev/null
+++ b/dev-ml/xapi-stdext/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>lssndrbarbieri@gmail.com</email>
+    <name>Alessandro Barbieri</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">xapi-project/stdext</remote-id>
+  </upstream>
+</pkgmetadata>
diff --git a/dev-ml/xapi-stdext/xapi-stdext-4.18.0.ebuild b/dev-ml/xapi-stdext/xapi-stdext-4.18.0.ebuild
new file mode 100644
index 0000000000..79e88891db
--- /dev/null
+++ b/dev-ml/xapi-stdext/xapi-stdext-4.18.0.ebuild
@@ -0,0 +1,39 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Citrix's (deprecated) extensions to the ocaml standard library"
+HOMEPAGE="
+	https://xapi-project.github.io/stdext/
+	https://github.com/xapi-project/stdext
+"
+SRC_URI="https://github.com/xapi-project/stdext/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/stdext-${PV}"
+
+LICENSE="LGPL-2.1-with-linking-exception"
+SLOT="0/${PV}"
+KEYWORDS="~amd64"
+IUSE="ocamlopt"
+
+DEPEND="
+	<dev-lang/ocaml-4.14.0
+	dev-ml/astring
+	dev-ml/fd-send-recv
+	dev-ml/logs
+	dev-ml/ptime
+	dev-ml/xapi-backtrace
+"
+RDEPEND="${DEPEND}"
+
+src_install() {
+	dune_src_install xapi-stdext-date
+	dune_src_install xapi-stdext-encodings
+	dune_src_install xapi-stdext-pervasives
+	dune_src_install xapi-stdext-std
+	dune_src_install xapi-stdext-threads
+	dune_src_install xapi-stdext-unix
+	dune_src_install xapi-stdext-zerocheck
+}