diff --git a/dev-python/anys/ChangeLog b/dev-python/anys/ChangeLog
new file mode 100644
index 0000000..fea6082
--- /dev/null
+++ b/dev-python/anys/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/anys/Manifest b/dev-python/anys/Manifest
new file mode 100644
index 0000000..09ac6c6
--- /dev/null
+++ b/dev-python/anys/Manifest
@@ -0,0 +1 @@
+DIST anys-0.2.0.tar.gz 17799 SHA256 cf8ca25b948ce0c6455d5eb40160334543ed818cdf51e5c3337020ec87bb25c0 SHA512 72bdc9df4cd805604f5497418a90738fccbc0ffd2dddf81324fe50d0d8ab13e036ff829e284dea8473427af396f02ceb01a191ad7d6946427478a12c04ca2ffd WHIRLPOOL 11da59490b36b55bed5c6401b34cc1259be8d6d5a58e2ba255f75ba824c6d9065aff6d7d41b3fa423be36afb4a43c75995014850e1acb90cadd244536960e1bc
diff --git a/dev-python/anys/anys-0.2.0.ebuild b/dev-python/anys/anys-0.2.0.ebuild
new file mode 100644
index 0000000..c574024
--- /dev/null
+++ b/dev-python/anys/anys-0.2.0.ebuild
@@ -0,0 +1,29 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} )
+DISTUTILS_USE_SETUPTOOLS=pyproject.toml
+inherit distutils-r1
+
+DESCRIPTION="Matchers for pytest"
+HOMEPAGE="https://github.com/jwodder/anys"
+EGIT_REPO_URI="https://github.com/dandi/dandischema.git"
+SRC_URI="https://github.com/jwodder/anys/releases/download/v${PV}/${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	dev-python/wheel[${PYTHON_USEDEP}]
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-0.2.0-coverage.patch"
+)
+
+distutils_enable_tests pytest
diff --git a/dev-python/anys/files/anys-0.2.0-coverage.patch b/dev-python/anys/files/anys-0.2.0-coverage.patch
new file mode 100644
index 0000000..8091ded
--- /dev/null
+++ b/dev-python/anys/files/anys-0.2.0-coverage.patch
@@ -0,0 +1,10 @@
+--- a/tox.ini	2021-09-27 06:43:49.569561395 -0400
++++ b/tox.ini	2021-09-27 06:47:36.549815529 -0400
+@@ -30,7 +30,6 @@
+     mypy src test
+
+ [pytest]
+-addopts = --cov=anys --no-cov-on-fail
+ filterwarnings = error
+ norecursedirs = test/data
+
diff --git a/dev-python/anys/metadata.xml b/dev-python/anys/metadata.xml
new file mode 100644
index 0000000..f6f63a8
--- /dev/null
+++ b/dev-python/anys/metadata.xml
@@ -0,0 +1,12 @@
+<?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>
+</pkgmetadata>