Add the rest of the usual package scaffolding.

.flake8

@@ -0,0 +1,7 @@
+[flake8]
+ban-relative-imports = true
+inline-quotes = "
+ignore =
+    B008,  # Barring function calls in default args. Ha, no.
+    B306,  # See https://github.com/PyCQA/flake8-bugbear/issues/131
+    W503,  # (flake8 default) old PEP8 boolean operator line breaks

README.rst

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+===========================
+``sphinx-json-schema-spec``
+===========================
+
+|PyPI| |Pythons| |CI|
+
+.. |PyPI| image:: https://img.shields.io/pypi/v/sphinx-json-schema-spec.svg
+  :alt: PyPI version
+  :target: https://pypi.org/project/sphinx-json-schema-spec/
+
+.. |Pythons| image:: https://img.shields.io/pypi/pyversions/sphinx-json-schema-spec.svg
+  :alt: Supported Python versions
+  :target: https://pypi.org/project/sphinx-json-schema-spec/
+
+.. |CI| image:: https://github.com/python-jsonschema/sphinx-json-schema-spec/workflows/CI/badge.svg
+  :alt: Build status
+  :target: https://github.com/python-jsonschema/sphinx-json-schema-spec/actions?query=workflow%3ACI
+
+
+A Sphinx extension providing a role which allows linking to sections within the `JSON Schema specifications <https://json-schema.org/>`_.
+
+It is intended for use by implementations of JSON Schema (in Python or otherwise) who may wish to interlink to the specification in their own documentation.

pyproject.toml

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+[build-system]
+requires = ["hatchling", "hatch-vcs"]
+build-backend = "hatchling.build"
+
+[tool.hatch.version]
+source = "vcs"
+
+[project]
+name = "sphinx_json_schema_spec"
+description = ""
+readme = "README.rst"
+requires-python = ">=3.7"
+license = {text = "MIT"}
+keywords = ["json schema", "jsonschema", "data validation", "sphinx", "json"]
+authors = [
+  {email = "[email protected]"},
+  {name = "Julian Berman"},
+]
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.7",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: Implementation :: CPython",
+  "Programming Language :: Python :: Implementation :: PyPy",
+  "Programming Language :: Python",
+  "Framework :: Sphinx :: Extension",
+  "Topic :: Documentation :: Sphinx",
+]
+dynamic = ["version"]
+
+dependencies = [
+    "lxml",
+    "sphinx>=5.1.1",
+]
+
+[project.urls]
+Homepage = "https://github.com/python-jsonschema/sphinx-json-schema-spec"
+Issues = "https://github.com/python-jsonschema/sphinx-json-schema-spec/issues/"
+Funding = "https://github.com/sponsors/Julian"
+Source = "https://github.com/python-jsonschema/sphinx-json-schema-spec"
+
+[tool.isort]
+from_first = true
+include_trailing_comma = true
+multi_line_output = 3

sphinx_json_schema_spec/tests/test_sphinx.py

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+def test_it_works():
+    pass

tox.ini

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+[tox]
+envlist =
+    {py37,py38,py39,py310,py311,pypy3}-{build,tests}
+    readme
+    safety
+    secrets
+    style
+skipsdist = True
+
+[testenv]
+passenv = CI
+setenv =
+    coverage: MAYBE_COVERAGE = coverage run -m
+    coverage: COVERAGE_RCFILE={toxinidir}/.coveragerc
+    coverage: COVERAGE_DEBUG_FILE={envtmpdir}/coverage-debug
+    coverage: COVERAGE_FILE={envtmpdir}/coverage-data
+changedir = {envtmpdir}
+args_are_paths = false
+commands =
+    {envpython} -m pip install {toxinidir}
+
+    safety: {envpython} -m safety check
+
+    tests,coverage: {envpython} -m {env:MAYBE_COVERAGE:} py.test {posargs:{toxinidir}/sphinx_json_schema_spec/}
+    tests: {envpython} -m doctest {toxinidir}/README.rst
+
+    coverage: {envpython} -m coverage report --show-missing
+    coverage: {envpython} -m coverage html --directory={envtmpdir}/htmlcov
+deps =
+    safety: safety
+    tests,coverage: pytest
+    coverage: coverage
+
+[testenv:build]
+deps = build
+commands = {envpython} -m build {toxinidir} --outdir {envtmpdir}/dist
+
+[testenv:bandit]
+deps = bandit
+commands = {envpython} -m bandit --recursive sphinx_json_schema_spec
+
+[testenv:readme]
+deps =
+    build
+    twine
+commands =
+    {envpython} -m build --outdir {envtmpdir}/dist {toxinidir}
+    {envpython} -m twine check {envtmpdir}/dist/*
+
+[testenv:secrets]
+deps = detect-secrets
+commands = {envbindir}/detect-secrets scan {toxinidir}
+
+[testenv:style]
+deps =
+    flake8
+    flake8-broken-line
+    flake8-bugbear
+    flake8-commas
+    flake8-quotes
+    flake8-tidy-imports
+commands =
+    {envpython} -m flake8 {posargs} --max-complexity 10 {toxinidir}/sphinx_json_schema_spec