Fix docs building (#1899)

* revert to py3.9-compatible type annotation * alternatively, don't restrict python to 39 * revert back to py39 just to see if the RTD build would have finished * go back to not restricting python
openforcefield · Jun 24, 2024 · b198fdf · b198fdf
1 parent cce000c
commit b198fdf
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/docs/environment.yml b/docs/environment.yml
@@ -13,7 +13,7 @@ dependencies:
     - sphinx-notfound-page
     - sphinx=6
     # conda build dependencies
-    - python=3.9
+    - python
     - setuptools
     - numpy
     - openmm

diff --git a/openff/toolkit/typing/engines/smirnoff/parameters.py b/openff/toolkit/typing/engines/smirnoff/parameters.py
@@ -342,7 +342,7 @@ class ParameterAttribute:
     def __init__(
         self,
         default: Any = UNDEFINED,
-        unit: Unit | str | None = None,
+        unit: Union[Unit, str, None] = None,
         converter: Optional[Callable] = None,
         docstring: str = "",
     ):