Fix RTD build

.readthedocs.yml

@@ -10,7 +10,14 @@ build:
 
 sphinx:
   configuration: docs/conf.py
-  fail_on_warning: false
+  # Interchange's docs should not produce warnings; if they start,
+  # something is broken (most likely automatic API doc generation)
+  fail_on_warning: true
 
 conda:
   environment: devtools/conda-envs/docs_env.yaml
+
+python:
+  install:
+    - method: pip
+      path: .

docs/conf.py

@@ -14,15 +14,8 @@
 # Incase the project was not installed
 import importlib
 import os
-import sys
-
-try:
-    from openff.interchange import __version__
-except ModuleNotFoundError:
-    __version__ = "0.0.0"
-
-sys.path.insert(0, os.path.abspath("../"))
 
+from openff.interchange import __version__
 
 # -- Project information -----------------------------------------------------
 
@@ -290,4 +283,13 @@
 ]
 
 
-# -- Extension configuration -------------------------------------------------
+# -- ReadTheDocs configuration -------------------------------------------------
+
+if os.environ.get("READTHEDOCS", "") == "True":
+    # Define the canonical URL if you are using a custom domain on Read the Docs
+    html_baseurl = os.environ.get("READTHEDOCS_CANONICAL_URL", "")
+
+    # Tell Jinja2 templates the build is running on Read the Docs
+    if "html_context" not in globals():
+        html_context = {}
+    html_context["READTHEDOCS"] = True

pyproject.toml

@@ -6,7 +6,7 @@ requires = [
 build-backend = "setuptools.build_meta"
 
 [project]
-name="Interchange"
+name="openff-interchange"
 description = "A project (and object) for storing, manipulating, and converting molecular mechanics data."
 readme = "README.md"
 authors = [{name = "Open Force Field Initiative", email = "[email protected]"}]