add petsc4py dependency

hherlyng · web-flow · commit 0298a61333aa · 2023-04-14T14:39:42.000+02:00
diff --git a/environment.yml b/environment.yml
@@ -15,3 +15,4 @@ dependencies:
   - pyvista
   - autopep8
   - fenics-dolfinx
+  - petsc4py
