diff --git a/dev-python/ndx-optogenetics/ChangeLog b/dev-python/ndx-optogenetics/ChangeLog
new file mode 100644
index 0000000..bd36818
--- /dev/null
+++ b/dev-python/ndx-optogenetics/ChangeLog
@@ -0,0 +1,5 @@
+*ndx-optogenetics-9999 (03 Nov 2021)
+
+  03 Nov 2021;  <chymera@gentoo.org> +metadata.xml,
+  +ndx-optogenetics-9999.ebuild:
+  dev-python/ndx-optogenetics: new package (DANDI stack)
diff --git a/dev-python/ndx-optogenetics/metadata.xml b/dev-python/ndx-optogenetics/metadata.xml
new file mode 100644
index 0000000..d0c64f1
--- /dev/null
+++ b/dev-python/ndx-optogenetics/metadata.xml
@@ -0,0 +1,15 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>gentoo@chymera.eu</email>
+		<name>Horea Christian</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>sci@gentoo.org</email>
+		<name>Gentoo Science Project</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">TheChymera/ndx-optogenetics</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/dev-python/ndx-optogenetics/ndx-optogenetics-9999.ebuild b/dev-python/ndx-optogenetics/ndx-optogenetics-9999.ebuild
new file mode 100644
index 0000000..a4dab9b
--- /dev/null
+++ b/dev-python/ndx-optogenetics/ndx-optogenetics-9999.ebuild
@@ -0,0 +1,22 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} )
+inherit distutils-r1 git-r3
+
+DESCRIPTION="NWB extension package for better optogenetics support."
+HOMEPAGE="https://github.com/TheChymera/ndx-optogenetics"
+EGIT_REPO_URI="https://github.com/TheChymera/ndx-optogenetics.git"
+
+SLOT="0"
+LICENSE="BSD"
+KEYWORDS=""
+
+RDEPEND="
+	dev-python/hdmf[${PYTHON_USEDEP}]
+	dev-python/pynwb[${PYTHON_USEDEP}]
+	"
+
+distutils_enable_tests pytest