v3 from_array() does not persist chunks correctly

[dstansby]

import zarr
from pydantic_zarr.v3 import ArraySpec

arr = zarr.create_array(
    store={},
    shape=(64, 64, 64),
    dtype="float32",
    chunks=(16, 16, 16),
)
print(arr.chunks)
# (16, 16, 16)

spec = ArraySpec.from_array(arr)
print(spec.chunk_grid)
# {'name': 'regular', 'configuration': {'chunk_shape': (64, 64, 64)}}

I would expect the last line to have the same chunks as the earlier array.

[d-v-b]

yes it should! looks like a bug in our auto_chunks logic

[dstansby]

from_zarr() seems to work instead, so maybe from_array() could delegate to from_zarr() if a Zarr array is passed?

[d-v-b]

that's a good idea!