Following the model at https://github.com/pypa/sampleproject

Author: dpapathanasiou

.gitignore

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+# general things to ignore
+build/
+dist/
+*.egg-info/
+*.egg
+*.py[cod]
+__pycache__/
+*.so
+*~
+
+# due to using tox and pytest
+.tox
+.cache
+.pytest_cache

LICENSE

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+The MIT License (MIT)
+Copyright (c) Denis Papathanasiou
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

MANIFEST.in

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+include pyproject.toml
+
+include *.md
+include LICENSE.txt
+include setup.py
+
+recursive-include sql *

README.md

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+# About
+
+This is the meta repository for packaging the [simple-graph](https://github.com/dpapathanasiou/simple-graph/blob/main/python) implementation in [Python](https://www.python.org/) for distribution in [PyPI](https://pypi.org/).

pyproject.toml

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+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"

setup.cfg

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+[metadata]
+name = simple-graph-sqlite
+version = 2.0.0
+author = Denis Papathanasiou
+description = A simple graph database in SQLite
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://github.com/dpapathanasiou/simple-graph
+project_urls =
+    Bug Tracker = https://github.com/dpapathanasiou/simple-graph/issues
+
+[options]
+package_dir =
+    = src
+packages = find:
+python_requires = >=3.6
+
+[options.packages.find]
+where = src

setup.py

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+from setuptools import setup, find_packages
+import pathlib
+
+here = pathlib.Path(__file__).parent.resolve()
+sql = (here / "sql")
+
+long_description = (here / 'README.md').read_text(encoding='utf-8')
+
+setup(
+    name='simple-graph-sqlite',
+    version='2.0.0',
+    description='A simple graph database in SQLite',
+    long_description=long_description,
+    long_description_content_type='text/markdown',
+    url='https://github.com/dpapathanasiou/simple-graph',
+    author='Denis Papathanasiou',
+    package_dir={'': 'src'},
+    packages=find_packages(where='src'),
+    python_requires='>=3.6, <4',
+    install_requires=['graphviz'],
+    extras_require={
+        'test': ['pytest'],
+    },
+    data_files=[('sql', [f'sql/{file.name}' for file in sql.glob('*.sql')])],
+    project_urls={
+        'Bug Reports': 'https://github.com/dpapathanasiou/simple-graph/issues',
+        'Source': 'https://github.com/dpapathanasiou/simple-graph/tree/main/python',
+    },
+)

sql/delete-edge.sql

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+DELETE FROM edges WHERE source = ? OR target = ?

sql/delete-node.sql

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+DELETE FROM nodes WHERE id = ?

sql/insert-edge.sql

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+INSERT INTO edges VALUES(?, ?, json(?))

sql/insert-node.sql

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+INSERT INTO nodes VALUES(json(?))

sql/schema.sql

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+CREATE TABLE IF NOT EXISTS nodes (
+    body TEXT,
+    id   TEXT GENERATED ALWAYS AS (json_extract(body, '$.id')) VIRTUAL NOT NULL UNIQUE
+);
+
+CREATE INDEX IF NOT EXISTS id_idx ON nodes(id);
+
+CREATE TABLE IF NOT EXISTS edges (
+    source     TEXT,
+    target     TEXT,
+    properties TEXT,
+    FOREIGN KEY(source) REFERENCES nodes(id),
+    FOREIGN KEY(target) REFERENCES nodes(id)
+);
+
+CREATE INDEX IF NOT EXISTS source_idx ON edges(source);
+CREATE INDEX IF NOT EXISTS target_idx ON edges(target);

sql/search-edges-inbound.sql

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+SELECT * FROM edges WHERE source = ?

sql/search-edges-outbound.sql

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+SELECT * FROM edges WHERE target = ?

sql/search-edges.sql

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+SELECT * FROM edges WHERE source = ? 
+UNION
+SELECT * FROM edges WHERE target = ?

sql/search-node-by-id.sql

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+SELECT body FROM nodes WHERE json_extract(body, '$.id') = ?

sql/search-node.sql

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+SELECT body FROM nodes WHERE 

sql/traverse-inbound.sql

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+WITH RECURSIVE traverse(id) AS (
+  SELECT ?
+  UNION
+  SELECT source FROM edges JOIN traverse ON target = id
+) SELECT id FROM traverse;

sql/traverse-outbound.sql

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+WITH RECURSIVE traverse(id) AS (
+  SELECT ?
+  UNION
+  SELECT target FROM edges JOIN traverse ON source = id
+) SELECT id FROM traverse;

sql/traverse.sql

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+WITH RECURSIVE traverse(id) AS (
+  SELECT ?
+  UNION
+  SELECT source FROM edges JOIN traverse ON target = id
+  UNION
+  SELECT target FROM edges JOIN traverse ON source = id
+) SELECT id FROM traverse;

sql/update-node.sql

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+UPDATE nodes SET body = json(?) WHERE id = ?