diff --git a/dev-python/dandischema/ChangeLog b/dev-python/dandischema/ChangeLog
new file mode 100644
index 0000000..fea6082
--- /dev/null
+++ b/dev-python/dandischema/ChangeLog
@@ -0,0 +1,6 @@
+*dandischema-0.3.4 (27 Sep 2021)
+
+  27 Sep 2021;  <chymera@gentoo.org> +dandischema-0.3.4.ebuild,
+  +files/dandischema-0.3.4-coverage.patch,
+  +files/dandischema-0.3.4-versioningit.patch, +metadata.xml:
+  dev-python/dandischema: new package (DANDI stack)
diff --git a/dev-python/dandischema/Manifest b/dev-python/dandischema/Manifest
new file mode 100644
index 0000000..adc9c40
--- /dev/null
+++ b/dev-python/dandischema/Manifest
@@ -0,0 +1 @@
+DIST dandischema-0.3.4.tar.gz 47642 SHA256 f154b8c9f4e06cbf770241a1cfd75fabaa9e6f1dd4cac1554627e85ac4e93681 SHA512 764db251e47147b16d6beaecabf7b4610caf60f8bdaf6a4b05c084a6274d249aa340cb503912895812fcfad7a0c305cae5b2db3d590aeb69a8afd4e7068edf82 WHIRLPOOL bfe8edb5da25b5d45a8fb7df9acdb4797478e2329bde0738cf4af3c318bb7d73942de79a4b70f78e2ac90d67bf74d11f1c733db111d1d676537dddc5d1be882c
diff --git a/dev-python/dandischema/dandischema-0.3.4.ebuild b/dev-python/dandischema/dandischema-0.3.4.ebuild
new file mode 100644
index 0000000..8c1dac5
--- /dev/null
+++ b/dev-python/dandischema/dandischema-0.3.4.ebuild
@@ -0,0 +1,51 @@
+# 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
+
+DESCRIPTION="Schemata for DANDI archive project"
+HOMEPAGE="https://github.com/dandi/dandischema"
+EGIT_REPO_URI="https://github.com/dandi/dandischema.git"
+SRC_URI="https://github.com/dandi/dandischema/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	dev-python/wheel[${PYTHON_USEDEP}]
+	dev-python/jsonschema[${PYTHON_USEDEP}]
+	dev-python/pydantic[${PYTHON_USEDEP}]
+	dev-python/python-email-validator[${PYTHON_USEDEP}]
+	dev-python/requests[${PYTHON_USEDEP}]
+"
+DEPEND="
+	dev-python/setuptools[${PYTHON_USEDEP}]
+"
+
+PATCHES=(
+	"${FILESDIR}/${P}-coverage.patch"
+	"${FILESDIR}/${P}-versioningit.patch"
+)
+
+src_configure() {
+	echo "__version__ = '${PV}'" >> dandischema/_version.py
+}
+
+distutils_enable_tests pytest
+
+python_test() {
+	local EPYTEST_DESELECT=(
+		# Requires network access:
+		# https://github.com/dandi/dandischema/issues/87
+		dandischema/tests/test_metadata.py::test_migrate_041
+	)
+	pushd dandischema || die
+		epytest tests
+	popd
+}
diff --git a/dev-python/dandischema/files/dandischema-0.3.4-coverage.patch b/dev-python/dandischema/files/dandischema-0.3.4-coverage.patch
new file mode 100644
index 0000000..a9c7b6c
--- /dev/null
+++ b/dev-python/dandischema/files/dandischema-0.3.4-coverage.patch
@@ -0,0 +1,11 @@
+--- a/tox.ini	2021-09-22 19:31:20.534576095 -0400
++++ b/tox.ini	2021-09-26 16:11:30.080164191 -0400
+@@ -17,7 +17,7 @@
+     flake8 --config=setup.cfg {posargs} dandischema setup.py
+
+ [pytest]
+-addopts = --cov=dandischema --tb=short --durations=10
++addopts = --tb=short --durations=10
+ filterwarnings = error
+
+ [coverage:run]
diff --git a/dev-python/dandischema/files/dandischema-0.3.4-versioningit.patch b/dev-python/dandischema/files/dandischema-0.3.4-versioningit.patch
new file mode 100644
index 0000000..5890917
--- /dev/null
+++ b/dev-python/dandischema/files/dandischema-0.3.4-versioningit.patch
@@ -0,0 +1,10 @@
+--- a/setup.py	2021-09-22 19:31:20.533576086 -0400
++++ b/setup.py	2021-09-23 07:42:02.856983656 -0400
+@@ -21,7 +21,7 @@
+
+ # Give setuptools a hint to complain if it's too old a version
+ # Should match pyproject.toml
+-SETUP_REQUIRES = ["setuptools >= 42.0.0", "versioningit ~= 0.1.0"]
++SETUP_REQUIRES = ["setuptools >= 42.0.0"]
+ # This enables setuptools to install wheel on-the-fly
+ SETUP_REQUIRES += ["wheel"] if "bdist_wheel" in sys.argv else []
diff --git a/dev-python/dandischema/metadata.xml b/dev-python/dandischema/metadata.xml
new file mode 100644
index 0000000..edc7df9
--- /dev/null
+++ b/dev-python/dandischema/metadata.xml
@@ -0,0 +1,22 @@
+<?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>
+	<longdescription lang="en">
+		A Python library for maintaining and managing DANDI metadata schemata.
+		The library helps create and validate DANDI schema-compliant metadata
+		for Dandisets and assets. Every Dandiset and associated asset has a
+		metadata object that can be retrieved using the DANDI API. This
+		library uses Pydantic to implement all the metadata classes. Schemas
+		are generated on schema modifications and placed into this repository.
+		Dandischema generates JSON schema definitions and also an associated
+		context.json file for JSON-LD compliance of the metadata models.
+	</longdescription>
+</pkgmetadata>