fix: Compatibility with latest dask versions and environment requirements pinning.

Author: Thomas Zilio

conda/environment.yml

@@ -16,4 +16,4 @@ dependencies:
   - sphinx-gallery
   - sphinx-inline-tabs
   - xarray
-  - zarr>=2.11.0
+  - zarr>=2.11.0,<3

zcollection/variable/array.py

@@ -38,6 +38,9 @@ def _as_numpy_array(
         with masked data replaced by its fill value and the fill value of the
         offered masked array. Otherwise, the provided array and fill value.
     """
+    if isinstance(arr, dask.array.core.Array):
+        arr = arr.compute()
+
     result: NDArray = numpy.asanyarray(arr)
     if isinstance(result, numpy.ma.MaskedArray):
         if fill_value is not None and not_equal(fill_value, result.fill_value):