use devtools dfn branch, add codespell, update pixi env

.github/workflows/ci.yml

@@ -33,6 +33,9 @@ jobs:
       - name: Run mypy
         run: pixi run mypy flopy4
 
+      - name: Run codespell
+        run: pixi run codespell
+
   build:
     name: Build
     runs-on: ubuntu-latest

flopy4/mf6/codec/reader/transformer.py

@@ -6,7 +6,8 @@
 import numpy as np
 import xarray as xr
 from lark import Token, Transformer
-from modflow_devtools.dfn import SCALAR_TYPES, Dfn
+from modflow_devtools.dfn import Dfn
+from modflow_devtools.dfn.schema.v2 import SCALAR_TYPES
 
 
 class BasicTransformer(Transformer):

flopy4/mf6/gwf/oc.py

@@ -56,7 +56,7 @@ class Steps:
     head_file: Optional[Path] = path(
         block="options", converter=to_path, default=None, inout="fileout"
     )
-    # TODO: needs coverter and then rename?
+    # TODO: needs converter and then rename?
     head: Optional[Format] = field(block="options", default=None)
     save_head: Optional[NDArray[np.str_]] = array(
         dtype=np.dtypes.StringDType(),

flopy4/mf6/utils/cbc_reader.py

@@ -91,7 +91,7 @@ def open_cbc(
         Whether to return the flow-ja-face values "as is" (``True``) or in a
         grid form (``False``).
     simulation_start_time : Optional datetime
-        The time and date correpsonding to the beginning of the simulation.
+        The time and date corresponding to the beginning of the simulation.
         Use this to convert the time coordinates of the output array to
         calendar time/dates. time_unit must also be present if this argument is
         present.