import compat for numcodecs

Author: jhamman

src/zarr/codecs/_v2.py

@@ -14,8 +14,8 @@
 if TYPE_CHECKING:
     import numcodecs.abc
 
+    from zarr.abc.buffer import Buffer, NDBuffer
     from zarr.core.array_spec import ArraySpec
-    from zarr.core.buffer import Buffer, NDBuffer
 
 
 @dataclass(frozen=True)

src/zarr/core/buffer/__init__.py

@@ -0,0 +1,10 @@
+import warnings
+
+from zarr.abc.buffer import Buffer, BufferPrototype, NDBuffer  # noqa: F401
+
+warnings.warn(
+    "The zarr.core.buffer module is deprecated and will be removed in a future version. "
+    "Please use zarr.buffer and zarr.abc.buffer modules instead.",
+    FutureWarning,
+    stacklevel=2,
+)

src/zarr/core/buffer/cpu.py

@@ -0,0 +1 @@
+from zarr.buffer.cpu import as_numpy_array_wrapper  # noqa: F401

src/zarr/registry.py

@@ -10,14 +10,14 @@
 if TYPE_CHECKING:
     from importlib.metadata import EntryPoint
 
+    from zarr.abc.buffer import Buffer, NDBuffer
     from zarr.abc.codec import (
         ArrayArrayCodec,
         ArrayBytesCodec,
         BytesBytesCodec,
         Codec,
         CodecPipeline,
     )
-    from zarr.core.buffer import Buffer, NDBuffer
     from zarr.core.common import JSON
 
 __all__ = [