diff --git a/py-gerrychain/DESCR b/py-gerrychain/DESCR
new file mode 100644
index 0000000000..2d72ef9f0b
--- /dev/null
+++ b/py-gerrychain/DESCR
@@ -0,0 +1,13 @@
+GerryChain is a Python library for building ensembles of districting
+plans using Markov chain Monte Carlo. It is developed and maintained
+by the Metric Geometry and Gerrymandering Group and our network of
+volunteers.
+
+The basic workflow is to start with the geometry of an initial plan
+and generate a large collection of sample plans for comparison.
+Usually, we will constrain these sampled plans in such a way that
+they perform at least as well as the initial plan according to
+traditional districting principles, such as population balance or
+compactness. Comparing the initial plan to the ensemble provides
+quantitative tools for measuring whether or not it is an outlier
+among the sampled plans
diff --git a/py-gerrychain/Makefile b/py-gerrychain/Makefile
new file mode 100644
index 0000000000..3cfeec1bc6
--- /dev/null
+++ b/py-gerrychain/Makefile
@@ -0,0 +1,21 @@
+# $NetBSD$
+
+DISTNAME=	gerrychain-0.2.12
+PKGNAME=	${PYPKGPREFIX}-${DISTNAME}
+CATEGORIES=	math
+MASTER_SITES=	${MASTER_SITE_PYPI:=g/gerrychain/}
+
+MAINTAINER=	jihbed.research@gmail.com
+HOMEPAGE=	https://files.pythonhosted.org/packages/79/76/0ad276d1eda834f6a9e42f62488cf394548b88a25f44a1b57b386acb6b86/
+COMMENT=	Markov chain Monte Carlo to analyze districting plans and gerrymanders
+LICENSE=	modified-bsd
+
+PYTHON_VERSIONS_INCOMPATIBLE=	27
+
+DEPENDS+=	${PYPKGPREFIX}-matplotlib>=3.2.2:../../graphics/py-matplotlib
+DEPENDS+=	${PYPKGPREFIX}-networkx>=2.4:../../math/py-networkx
+DEPENDS+=	${PYPKGPREFIX}-pandas>=0.25.3:../../math/py-pandas
+DEPENDS+=	${PYPKGPREFIX}-scipy>=1.2.3:../../math/py-scipy
+
+.include "../../lang/python/egg.mk"
+.include "../../mk/bsd.pkg.mk"
diff --git a/py-gerrychain/PLIST b/py-gerrychain/PLIST
new file mode 100644
index 0000000000..2227023500
--- /dev/null
+++ b/py-gerrychain/PLIST
@@ -0,0 +1,126 @@
+@comment $NetBSD$
+${PYSITELIB}/${EGG_INFODIR}/PKG-INFO
+${PYSITELIB}/${EGG_INFODIR}/SOURCES.txt
+${PYSITELIB}/${EGG_INFODIR}/dependency_links.txt
+${PYSITELIB}/${EGG_INFODIR}/requires.txt
+${PYSITELIB}/${EGG_INFODIR}/top_level.txt
+${PYSITELIB}/gerrychain/__init__.py
+${PYSITELIB}/gerrychain/__init__.pyc
+${PYSITELIB}/gerrychain/__init__.pyo
+${PYSITELIB}/gerrychain/_version.py
+${PYSITELIB}/gerrychain/_version.pyc
+${PYSITELIB}/gerrychain/_version.pyo
+${PYSITELIB}/gerrychain/accept.py
+${PYSITELIB}/gerrychain/accept.pyc
+${PYSITELIB}/gerrychain/accept.pyo
+${PYSITELIB}/gerrychain/chain.py
+${PYSITELIB}/gerrychain/chain.pyc
+${PYSITELIB}/gerrychain/chain.pyo
+${PYSITELIB}/gerrychain/constraints/__init__.py
+${PYSITELIB}/gerrychain/constraints/__init__.pyc
+${PYSITELIB}/gerrychain/constraints/__init__.pyo
+${PYSITELIB}/gerrychain/constraints/bounds.py
+${PYSITELIB}/gerrychain/constraints/bounds.pyc
+${PYSITELIB}/gerrychain/constraints/bounds.pyo
+${PYSITELIB}/gerrychain/constraints/compactness.py
+${PYSITELIB}/gerrychain/constraints/compactness.pyc
+${PYSITELIB}/gerrychain/constraints/compactness.pyo
+${PYSITELIB}/gerrychain/constraints/contiguity.py
+${PYSITELIB}/gerrychain/constraints/contiguity.pyc
+${PYSITELIB}/gerrychain/constraints/contiguity.pyo
+${PYSITELIB}/gerrychain/constraints/validity.py
+${PYSITELIB}/gerrychain/constraints/validity.pyc
+${PYSITELIB}/gerrychain/constraints/validity.pyo
+${PYSITELIB}/gerrychain/graph/__init__.py
+${PYSITELIB}/gerrychain/graph/__init__.pyc
+${PYSITELIB}/gerrychain/graph/__init__.pyo
+${PYSITELIB}/gerrychain/graph/adjacency.py
+${PYSITELIB}/gerrychain/graph/adjacency.pyc
+${PYSITELIB}/gerrychain/graph/adjacency.pyo
+${PYSITELIB}/gerrychain/graph/geo.py
+${PYSITELIB}/gerrychain/graph/geo.pyc
+${PYSITELIB}/gerrychain/graph/geo.pyo
+${PYSITELIB}/gerrychain/graph/graph.py
+${PYSITELIB}/gerrychain/graph/graph.pyc
+${PYSITELIB}/gerrychain/graph/graph.pyo
+${PYSITELIB}/gerrychain/grid.py
+${PYSITELIB}/gerrychain/grid.pyc
+${PYSITELIB}/gerrychain/grid.pyo
+${PYSITELIB}/gerrychain/metagraph.py
+${PYSITELIB}/gerrychain/metagraph.pyc
+${PYSITELIB}/gerrychain/metagraph.pyo
+${PYSITELIB}/gerrychain/metrics/__init__.py
+${PYSITELIB}/gerrychain/metrics/__init__.pyc
+${PYSITELIB}/gerrychain/metrics/__init__.pyo
+${PYSITELIB}/gerrychain/metrics/compactness.py
+${PYSITELIB}/gerrychain/metrics/compactness.pyc
+${PYSITELIB}/gerrychain/metrics/compactness.pyo
+${PYSITELIB}/gerrychain/metrics/partisan.py
+${PYSITELIB}/gerrychain/metrics/partisan.pyc
+${PYSITELIB}/gerrychain/metrics/partisan.pyo
+${PYSITELIB}/gerrychain/partition/__init__.py
+${PYSITELIB}/gerrychain/partition/__init__.pyc
+${PYSITELIB}/gerrychain/partition/__init__.pyo
+${PYSITELIB}/gerrychain/partition/assignment.py
+${PYSITELIB}/gerrychain/partition/assignment.pyc
+${PYSITELIB}/gerrychain/partition/assignment.pyo
+${PYSITELIB}/gerrychain/partition/geographic.py
+${PYSITELIB}/gerrychain/partition/geographic.pyc
+${PYSITELIB}/gerrychain/partition/geographic.pyo
+${PYSITELIB}/gerrychain/partition/partition.py
+${PYSITELIB}/gerrychain/partition/partition.pyc
+${PYSITELIB}/gerrychain/partition/partition.pyo
+${PYSITELIB}/gerrychain/partition/subgraphs.py
+${PYSITELIB}/gerrychain/partition/subgraphs.pyc
+${PYSITELIB}/gerrychain/partition/subgraphs.pyo
+${PYSITELIB}/gerrychain/proposals/__init__.py
+${PYSITELIB}/gerrychain/proposals/__init__.pyc
+${PYSITELIB}/gerrychain/proposals/__init__.pyo
+${PYSITELIB}/gerrychain/proposals/proposals.py
+${PYSITELIB}/gerrychain/proposals/proposals.pyc
+${PYSITELIB}/gerrychain/proposals/proposals.pyo
+${PYSITELIB}/gerrychain/proposals/spectral_proposals.py
+${PYSITELIB}/gerrychain/proposals/spectral_proposals.pyc
+${PYSITELIB}/gerrychain/proposals/spectral_proposals.pyo
+${PYSITELIB}/gerrychain/proposals/tree_proposals.py
+${PYSITELIB}/gerrychain/proposals/tree_proposals.pyc
+${PYSITELIB}/gerrychain/proposals/tree_proposals.pyo
+${PYSITELIB}/gerrychain/random.py
+${PYSITELIB}/gerrychain/random.pyc
+${PYSITELIB}/gerrychain/random.pyo
+${PYSITELIB}/gerrychain/tree.py
+${PYSITELIB}/gerrychain/tree.pyc
+${PYSITELIB}/gerrychain/tree.pyo
+${PYSITELIB}/gerrychain/updaters/__init__.py
+${PYSITELIB}/gerrychain/updaters/__init__.pyc
+${PYSITELIB}/gerrychain/updaters/__init__.pyo
+${PYSITELIB}/gerrychain/updaters/compactness.py
+${PYSITELIB}/gerrychain/updaters/compactness.pyc
+${PYSITELIB}/gerrychain/updaters/compactness.pyo
+${PYSITELIB}/gerrychain/updaters/county_splits.py
+${PYSITELIB}/gerrychain/updaters/county_splits.pyc
+${PYSITELIB}/gerrychain/updaters/county_splits.pyo
+${PYSITELIB}/gerrychain/updaters/cut_edges.py
+${PYSITELIB}/gerrychain/updaters/cut_edges.pyc
+${PYSITELIB}/gerrychain/updaters/cut_edges.pyo
+${PYSITELIB}/gerrychain/updaters/election.py
+${PYSITELIB}/gerrychain/updaters/election.pyc
+${PYSITELIB}/gerrychain/updaters/election.pyo
+${PYSITELIB}/gerrychain/updaters/flows.py
+${PYSITELIB}/gerrychain/updaters/flows.pyc
+${PYSITELIB}/gerrychain/updaters/flows.pyo
+${PYSITELIB}/gerrychain/updaters/tally.py
+${PYSITELIB}/gerrychain/updaters/tally.pyc
+${PYSITELIB}/gerrychain/updaters/tally.pyo
+${PYSITELIB}/gerrychain/vendor/__init__.py
+${PYSITELIB}/gerrychain/vendor/__init__.pyc
+${PYSITELIB}/gerrychain/vendor/__init__.pyo
+${PYSITELIB}/gerrychain/vendor/utm/__init__.py
+${PYSITELIB}/gerrychain/vendor/utm/__init__.pyc
+${PYSITELIB}/gerrychain/vendor/utm/__init__.pyo
+${PYSITELIB}/gerrychain/vendor/utm/conversion.py
+${PYSITELIB}/gerrychain/vendor/utm/conversion.pyc
+${PYSITELIB}/gerrychain/vendor/utm/conversion.pyo
+${PYSITELIB}/gerrychain/vendor/utm/error.py
+${PYSITELIB}/gerrychain/vendor/utm/error.pyc
+${PYSITELIB}/gerrychain/vendor/utm/error.pyo
diff --git a/py-gerrychain/distinfo b/py-gerrychain/distinfo
new file mode 100644
index 0000000000..19a5b4d9e6
--- /dev/null
+++ b/py-gerrychain/distinfo
@@ -0,0 +1,6 @@
+$NetBSD$
+
+SHA1 (gerrychain-0.2.12.tar.gz) = fde7fe845ac662311f275e5ec2480ac2fccc5bd2
+RMD160 (gerrychain-0.2.12.tar.gz) = e26b7b4528b0908bdecd3d17de1eb55d1828b849
+SHA512 (gerrychain-0.2.12.tar.gz) = 542f9160391d4a8d602c5c57194224b39aeb9fa0fa177812c73c80ddf0ca7084fff1be0c94cc233ea0cf61825c3a1e0b2c15c5ca43fc89f6fe6b2bb09575feba
+Size (gerrychain-0.2.12.tar.gz) = 54389 bytes