Update docs environment to Python 3.9

Author: michaelosthege

doc/conf.py

@@ -17,6 +17,7 @@
 # sys.path.append(os.path.abspath('some/directory'))
 
 import os
+import sys
 import pytensor
 
 # General configuration
@@ -60,7 +61,7 @@
 if os.environ.get("READTHEDOCS", False):
     rtd_version = os.environ.get("READTHEDOCS_VERSION", "")
     if rtd_version.lower() == "stable":
-        version = pymc.__version__.split("+")[0]
+        version = pytensor.__version__.split("+")[0]
     elif rtd_version.lower() == "latest":
         version = "dev"
     else:

doc/environment.yml

@@ -3,13 +3,13 @@ channels:
   - conda-forge
   - nodefaults
 dependencies:
-  - python=3.7
+  - python=3.9
   - gcc_linux-64
   - gxx_linux-64
   - numpy
   - scipy
   - six
-  - sphinx>=5.1.0
+  - sphinx>=5.1.0,<6
   - mock
   - pillow
   - pip

environment.yml

@@ -32,7 +32,7 @@ dependencies:
   - pytest-xdist
   - pytest-benchmark
   # For building docs
-  - sphinx>=5.1.0
+  - sphinx>=5.1.0,<6
   - sphinx_rtd_theme
   - pygments
   - pydot

pyproject.toml

@@ -89,8 +89,7 @@ tests = [
     "pytest-benchmark",
 ]
 rtd = [
-    "sphinx>=1.3.0",
-    "sphinx_rtd_theme",
+    "sphinx>=5.1.0,<6",
     "pygments",
     "pydot",
     "pydot2",