Get core Dask functionality from cfdm

Changelog.rst

@@ -43,9 +43,11 @@ version NEXTVERSION
   (https://github.com/NCAS-CMS/cf-python/issues/828)
 * New dependency: ``h5netcdf>=1.3.0``
 * New dependency: ``h5py>=3.10.0``
-* New dependency: ``s3fs>=2024.2.0``
+* New dependency: ``s3fs>=2024.6.0``
+* Changed dependency: ``numpy>=1.15,<2.0``
 * Changed dependency: ``1.11.2.0<=cfdm<1.11.3.0``
 * Changed dependency: ``cfunits>=3.3.7``
+* Changed dependency: ``dask>=2024.6.0,<=2024.7.1``
 
 ----
 

cf/__init__.py

@@ -123,7 +123,7 @@
     raise ImportError(_error0 + str(error1))
 
 try:
-    import numpy
+    import numpy as np
 except ImportError as error1:
     raise ImportError(_error0 + str(error1))
 
@@ -191,10 +191,11 @@
 
 # Check the version of numpy
 _minimum_vn = "1.22"
-if Version(numpy.__version__) < Version(_minimum_vn):
-    raise RuntimeError(
-        f"Bad numpy version: cf requires numpy>={_minimum_vn}. "
-        f"Got {numpy.__version__} at {numpy.__file__}"
+_maximum_vn = "2.0"
+if not Version(_minimum_vn) <= Version(np.__version__) < Version(_maximum_vn):
+    raise ValueError(
+        "Bad numpy version: cf requires _minimum_vn}<=numpy<{_maximum_vn}. "
+        f"Got {np.__version__} at {np.__file__}"
     )
 
 # Check the version of cfunits
@@ -208,15 +209,31 @@
 # Check the version of cfdm
 _minimum_vn = "1.11.2.0"
 _maximum_vn = "1.11.3.0"
-_cfdm_version = Version(cfdm.__version__)
-if not Version(_minimum_vn) <= _cfdm_version < Version(_maximum_vn):
+if (
+    not Version(_minimum_vn)
+    <= Version(cfdm.__version__)
+    < Version(_maximum_vn)
+):
     raise RuntimeError(
         f"Bad cfdm version: cf requires {_minimum_vn}<=cfdm<{_maximum_vn}. "
-        f"Got {_cfdm_version} at {cfdm.__file__}"
+        f"Got {cfdm.__version__} at {cfdm.__file__}"
     )
 
 # Check the version of dask
 
+# Check the version of numpy
+_minimum_vn = "2024.6.1"
+_maximum_vn = "2024.7.1"
+if (
+    not Version(_minimum_vn)
+    <= Version(dask.__version__)
+    <= Version(_maximum_vn)
+):
+    raise ValueError(
+        "Bad dask version: cf requires {_minimum_vn}<=dask<={_maximum_vn}. "
+        f"Got {dask.__version__} at {dask.__file__}"
+    )
+
 # Check the version of Python
 _minimum_vn = "3.8.0"
 if Version(platform.python_version()) < Version(_minimum_vn):
@@ -233,6 +250,8 @@
         f"Got {scipy.__version__} at {scipy.__file__}"
     )
 
+del _minimum_vn, _maximum_vn
+
 from .constructs import Constructs
 
 from .mixin import Coordinate

docs/source/installation.rst

@@ -192,9 +192,11 @@ Required
 
 * `Python <https://www.python.org/>`_, 3.8.0 or newer.
 
-* `numpy <https://pypi.org/project/numpy/>`_, 1.22.0 or newer.
+* `numpy <http://www.numpy.org>`_, versions 1.15 up to, but not
+  including, 2.0.
 
-* `dask <https://pypi.org/project/dask/>`_, 2022.12.1 or newer.
+* `dask <https://pypi.org/project/dask>`_, versions 2024.6.0 to
+  2024.7.1 inclusive.
 
 * `netCDF4 <https://pypi.org/project/netcdf4/>`_, 1.6.5 or newer.
 
@@ -206,7 +208,7 @@ Required
 
 * `h5py <https://pypi.org/project/h5py>`_, version 3.10.0 or newer.
 
-* `s3fs <https://pypi.org/project/s3fs>`_, version 2024.2.0 or newer.
+* `s3fs <https://pypi.org/project/s3fs>`_, version 2024.6.0 or newer.
 
 * `scipy <https://pypi.org/project/scipy>`_, version 1.10.0 or newer.
 

requirements.txt

@@ -1,12 +1,12 @@
 netCDF4>=1.6.5
 cftime>=1.6.2
-numpy>=1.22
+numpy>=1.22,<2.0
 cfdm>=1.11.2.0, <1.11.3.0
 psutil>=0.6.0
 cfunits>=3.3.7
-dask>=2024.4.0
+dask>=2024.6.0,<=2024.7.1
 packaging>=20.0
 scipy>=1.10.0
 h5netcdf>=1.3.0
 h5py>=3.10.0
-s3fs>=2024.2.0
+s3fs>=2024.6.0