Relax numpy build dependency

Author: molinav

CHANGELOG.md

@@ -12,6 +12,9 @@ https://semver.org/spec/v2.0.0.html
 
 ## [Unreleased]
 
+### Fixed
+- Relax `numpy` build dependency to ensure that builds work on MacOS.
+
 ## [1.3.3] - 2022-05-11
 
 ### Changed

packages/basemap/pyproject.toml

@@ -2,9 +2,9 @@
 requires = [
     'setuptools',
     'wheel',
-    'numpy == 1.21.4; python_version >= "3.10"',
-    'numpy == 1.16.6; python_version == "2.7" or (python_version >= "3.4" and python_version <= "3.9")',
-    'numpy == 1.11.3; python_version == "2.6" or (python_version >= "3.2" and python_version <= "3.3")',
+    'numpy >= 1.21.4; python_version >= "3.10"',
+    'numpy >= 1.16.6; python_version == "2.7" or (python_version >= "3.4" and python_version <= "3.9")',
+    'numpy >= 1.11.3; python_version == "2.6" or (python_version >= "3.2" and python_version <= "3.3")',
     'cython >= 0.29, < 3.1; python_version >= "3.3" or python_version < "3.0"',
     'cython >= 0.26, < 0.27; python_version == "3.2"'
 ]