docs(conf): dynamically determine docs release version

Signed-off-by: Braden Mars <bradenmars@bradenmars.me>

.readthedocs.yml

@@ -7,17 +7,23 @@ version: 2
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
-    configuration: docs/conf.py
+  configuration: docs/conf.py
 
 # Fetch Submodules
 submodules:
-    include: all
+  include: all
 
 # Optionally build your docs in additional formats such as PDF and ePub
 formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-    version: 3.8
-    install:
-        - requirements: docs/requirements.txt
+  install:
+    - requirements: docs/requirements.txt
+    - method: "pip"
+      path: "."
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3"

docs/conf.py

@@ -16,6 +16,11 @@
 
 from recommonmark.transform import AutoStructify
 
+try:
+    import importlib.metadata as importlib_metadata
+except ModuleNotFoundError:
+    import importlib_metadata
+
 sys.path.insert(0, os.path.abspath(".."))
 
 
@@ -30,7 +35,7 @@
 github_doc_root = "https://github.com/BradenM/micropy-cli/tree/master/docs/"
 
 # The full version, including alpha/beta/rc tags
-release = "4.0.0"
+release = importlib_metadata.version("micropy-cli")
 
 
 # -- General configuration ---------------------------------------------------