remove sphinx dependencies when not required (#94)

Author: coretl

template/pyproject.toml.jinja

@@ -23,18 +23,18 @@ requires-python = ">=3.7"
 [project.optional-dependencies]
 dev = [
     "copier",
-    "myst-parser",
-    "pipdeptree",
+    {% if sphinx %}"myst-parser",
+    {% endif %}"pipdeptree",
     "pre-commit",
-    "pydata-sphinx-theme>=0.12",
-    "pyright",
+    {% if sphinx %}"pydata-sphinx-theme>=0.12",
+    {% endif %}"pyright",
     "pytest",
     "pytest-cov",
     "ruff",
-    "sphinx-autobuild",
+    {% if sphinx %}"sphinx-autobuild",
     "sphinx-copybutton",
     "sphinx-design",
-    "tox-direct",
+    {% endif %}"tox-direct",
     "types-mock",
 ]