Tox devdeps_npy2 (#271)

* Support devdeps (numpy 1.x) and devdeps_npy2 (numpy 2.x)

* Add devdeps_npy2 target to matrix

.github/workflows/spherical_geometry.yml

@@ -53,3 +53,7 @@ jobs:
         - name: Python 3.12 with dev version of dependencies
           linux: py312-test-devdeps
           posargs: -v
+
+        - name: Python 3.12 with dev version of dependencies (numpy 2.x)
+          linux: py312-test-devdeps-numpy2x
+          posargs: -v

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{39,310,311,312}-test{,-devdeps}{,-cov}
+    py{39,310,311,312}-test{,-devdeps,-numpy2x}{,-cov}
     codestyle
     twine
     bandit
@@ -10,7 +10,7 @@ envlist =
 passenv = HOME,WINDIR,CC,CI
 
 setenv =
-    devdeps: PIP_EXTRA_INDEX_URL = https://pypi.anaconda.org/astropy/simple https://pypi.anaconda.org/scientific-python-nightly-wheels/simple https://pypi.anaconda.org/liberfa/simple
+    devdeps: PIP_EXTRA_INDEX_URL = https://pypi.anaconda.org/astropy/simple https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
 
 # Run the tests in a temporary directory to make sure that we don't import
 # package from the source tree
@@ -32,10 +32,9 @@ description =
 deps =
     # The devdeps factor is intended to be used to install the latest
     # developer version or nightly wheel of key dependencies.
-    devdeps: pyerfa>=0.0.dev0
-    devdeps: numpy>=0.0.dev0
     devdeps: astropy>=0.0.dev0
-
+    !numpy2x: numpy==1.*
+    numpy2x: numpy>=2.0.0.dev0
     cov: pytest-cov
 
 extras =