Use entry_points selection interface for <3.10 compatibility (#1469)

* use entry_points selection interface for <3.10 compatibility

* use importlib_metadata if python<3.10

---------

Co-authored-by: Ariana Barzinpour <ariana.barzinpour@ga.gov.au>

datacube/drivers/driver_cache.py

@@ -46,7 +46,10 @@ def safe_load(ep):
         return driver
 
     def resolve_all(group: str) -> Iterable[Tuple[str, Any]]:
-        from importlib.metadata import entry_points
+        try:
+            from importlib_metadata import entry_points
+        except ModuleNotFoundError:
+            from importlib.metadata import entry_points
         for ep in entry_points(group=group):
             driver = safe_load(ep)
             if driver is not None:

docs/click_utils.py

@@ -2,7 +2,6 @@
 #
 # Copyright (c) 2015-2023 ODC Contributors
 # SPDX-License-Identifier: Apache-2.0
-from importlib.metadata import entry_points
 from docutils.nodes import literal_block, section, title, make_id
 from sphinx.domains import Domain
 from docutils.parsers.rst import Directive
@@ -34,6 +33,10 @@ def find_script_callable_from_env(name, env):
 
 
 def find_script_callable(name):
+    try:
+        from importlib_metadata import entry_points
+    except ModuleNotFoundError:
+        from importlib.metadata import entry_points
     return list(entry_points(
         group='console_scripts', name=name))[0].load()
 

docs/requirements.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.10
+# This file is autogenerated by pip-compile with Python 3.11
 # by the following command:
 #
 #    pip-compile --extra=doc,s3 --output-file=docs/requirements.txt
@@ -70,6 +70,8 @@ dask[array]==2023.1.1
     #   distributed
 defusedxml==0.7.1
     # via nbconvert
+deprecat==2.1.1
+    # via datacube (setup.py)
 distributed==2023.1.1
     # via datacube (setup.py)
 docutils==0.17.1
@@ -216,8 +218,6 @@ requests==2.28.2
     # via sphinx
 ruamel-yaml==0.17.21
     # via datacube (setup.py)
-ruamel-yaml-clib==0.2.7
-    # via ruamel-yaml
 s3transfer==0.6.0
     # via boto3
 shapely==2.0.1
@@ -294,6 +294,8 @@ webencodings==0.5.1
     # via
     #   bleach
     #   tinycss2
+wrapt==1.15.0
+    # via deprecat
 xarray==2023.1.0
     # via datacube (setup.py)
 zict==2.2.0

setup.py

@@ -112,6 +112,7 @@
         'xarray>=0.9',  # >0.9 fixes most problems with `crs` attributes being lost
         'packaging',
         'deprecat',
+        'importlib_metadata>3.5;python_version<"3.10"',
     ],
     extras_require=extras_require,
     tests_require=tests_require,