Defer to .txt files for requirements.

These are easier for a user to read and/or install separately with pip.

pyproject.toml

@@ -1,10 +1,10 @@
 [build-system]
-requires = ["hatchling", "hatch-fancy-pypi-readme"]
+requires = ["hatchling", "hatch-fancy-pypi-readme", "hatch-requirements-txt"]
 build-backend = "hatchling.build"
 
 [project]
 name = "PROJECT_NAME"
-dynamic = ["version", "readme"]
+dynamic = ["version", "readme", "optional-dependencies"]
 description = "__DESCRIPTION__"
 license = {file = "LICENSE"}
 requires-python = ">= 3.7"
@@ -36,6 +36,9 @@ classifiers = [
 ]
 dependencies = []
 
+[tool.hatch.metadata.hooks.requirements_txt.optional-dependencies]
+example-depends = ["requirements-examples.txt"]
+
 [project.urls]
 GitHub = "https://www.github.com/pimoroni/PROJECT_NAME-python"
 Homepage = "https://www.pimoroni.com"
@@ -48,7 +51,8 @@ include = [
     "PROJECT_NAME",
     "README.md",
     "CHANGELOG.md",
-    "LICENSE"
+    "LICENSE",
+    "requirements-examples.txt"
 ]
 
 [tool.hatch.build.targets.sdist]

requirements-dev.txt

@@ -5,5 +5,6 @@ isort
 twine
 hatch
 hatch-fancy-pypi-readme
+hatch-requirements-txt
 tox
 pdoc

tox.ini

@@ -23,12 +23,5 @@ commands =
 	ruff check .
 	codespell .
 deps =
-	check-manifest
-	ruff
-	codespell
-	isort
-	twine
-	build
-	hatch
-	hatch-fancy-pypi-readme
+	-r{toxinidir}/requirements-dev.txt