unpin numpy version (#3646)

* unpin numpy version

* test

* always recreate tox env

* wrong way around

* nvm

* use minimum numpy version when building wheel

* also add catchall

* future is unpinned

* fix typo

pyproject.toml

@@ -1,5 +1,14 @@
 [build-system]
 requires = ["setuptools",
             "wheel",
-            "cython>=0.29",
-            "numpy>=1.16.0,!=1.19.0,<1.20.0"]
+            "cython>=0.29.21",
+            "numpy==1.16.0; python_version <= '3.7'",
+            "numpy==1.17.3; python_version == '3.8'",
+            "numpy==1.19.3; python_version == '3.9'",
+            "numpy; python_version >= '3.10'",
+            ]
+
+# To ensure the best compatibility, try to match the numpy reqs
+# where possible to the following used by scipy and the minimum
+# of our normal numpy requirements in setup.py
+# https://github.com/scipy/oldest-supported-numpy/blob/master/setup.cfg

requirements.txt

@@ -6,7 +6,7 @@ decorator>=3.4.2
 scipy>=0.16.0; python_version >= '3.5'
 scipy>=0.16.0,<1.3.0; python_version <= '3.4'
 matplotlib>=2.0.0
-numpy>=1.16.0,!=1.19.0,<1.20.0; python_version >= '3.5'
+numpy>=1.16.0,!=1.19.0; python_version >= '3.5'
 numpy>=1.16.0,<1.17.0; python_version <= '3.4'
 pillow
 h5py>=2.5

setup.py

@@ -38,7 +38,7 @@
 install_requires =  setup_requires + ['Mako>=1.0.1',
                       'cython>=0.29',
                       'decorator>=3.4.2',
-                      'numpy>=1.16.0,!=1.19.0,<1.20.0; python_version >= "3.5"',
+                      'numpy>=1.16.0,!=1.19.0; python_version >= "3.5"',
                       'numpy>=1.16.0,<1.17.0; python_version <= "2.7"',
                       'scipy>=0.16.0; python_version >= "3.5"',
                       'scipy>=0.16.0,<1.3.0; python_version <= "3.4"',

tox.ini

@@ -1,4 +1,5 @@
 [tox]
+recreate = true
 envlist = py-unittest
 indexserver =
     preinstall = https://pypi.python.org/simple