adding RTD conf file V2 as per request

.readthedocs.yaml

@@ -0,0 +1,19 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
+sphinx:
+  configuration: docs/source/conf.py
+  fail_on_warning: true
+
+python:
+  install:
+    - method: pip
+      path: .

docs/source/conf.py

@@ -15,10 +15,9 @@
 
 import sys
 import os
-import shlex
 from datetime import datetime
 
-on_rtd = os.environ.get('READTHEDOCS') == 'True'
+import sphinx_rtd_theme
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -58,9 +57,10 @@
 copyright = '2015, Continuum Analytics'
 author = 'Continuum Analytics'
 
-if on_rtd:
+if os.environ.get('READTHEDOCS'):
     # RTD replaces the last update date.  So we need to hack it in here.
-    copyright += '. Last updated on {}'.format(datetime.utcnow().strftime('%b %d, %Y'))
+    copyright += '. Last updated on {}'.format(
+        datetime.utcnow().strftime('%b %d, %Y'))
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -121,18 +121,9 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
-
-# on_rtd is whether we are on readthedocs.org
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
-
-if not on_rtd:
-    # only import and set the theme if we're building docs locally
-    # otherwise, readthedocs.org uses their theme by default, so no need to specify it
-    import sphinx_rtd_theme
-    html_theme = 'sphinx_rtd_theme'
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
+html_theme = 'sphinx_rtd_theme'
+html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the

setup.py

@@ -42,9 +42,6 @@ def _guard_py_ver():
 
 _guard_py_ver()
 
-if os.environ.get('READTHEDOCS', None) == 'True':
-    sys.exit("setup.py disabled on readthedocs: called with %s"
-             % (sys.argv,))
 
 import versioneer