Fix Sphinx doc generation without setuptools

docs/conf.py

@@ -10,7 +10,7 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import pkg_resources
+from importlib.metadata import version as get_version
 from typing import Dict
 
 # If extensions (or modules to document with autodoc) are in another directory,
@@ -51,7 +51,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = pkg_resources.get_distribution("django_csp").version
+version = get_version("django_csp")
 # The full version, including alpha/beta/rc tags.
 release = version
 
@@ -123,7 +123,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ["_static"]
+# html_static_path = ["_static"]
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.