MNT: numpy 2 and astropy 6.1 compat, bump minversions

.github/workflows/ci_workflows.yml

@@ -66,13 +66,13 @@ jobs:
 
           - name: Test without optional deps
             os: ubuntu-latest
-            python: 3.9
-            toxenv: py39-test
+            python: '3.10'
+            toxenv: py310-test
 
           - name: Coverage test with remote data
             os: ubuntu-latest
-            python: '3.10'
-            toxenv: py310-test-alldeps-cov
+            python: '3.11'
+            toxenv: py311-test-alldeps-cov
             toxposargs: --remote-data
 
           - name: Test with dev dependencies
@@ -82,13 +82,13 @@ jobs:
 
           - name: Test with old dependencies
             os: ubuntu-20.04
-            python: 3.9
-            toxenv: py39-test-oldestdeps
+            python: '3.10'
+            toxenv: py310-test-oldestdeps
 
           - name: Test in OSX
             os: macos-latest
-            python: '3.10'
-            toxenv: py310-test-alldeps
+            python: '3.12'
+            toxenv: py312-test-alldeps
 
           # NOTE: If TRDS cannot take the hit, disable --remote-data
           - name: Test in Windows with remote data

.github/workflows/codeql-analysis.yml

@@ -74,7 +74,7 @@ jobs:
       uses: actions/setup-python@v5
       if: matrix.language == 'cpp'
       with:
-        python-version: 3.9
+        python-version: '3.12'
 
     - name: Manual build
       if: matrix.language == 'cpp'

.github/workflows/predeps_workflow.yml

@@ -32,8 +32,8 @@ jobs:
 
           - name: RC test on Windows
             os: windows-latest
-            python: 3.9
-            toxenv: py39-test-predeps
+            python: '3.12'
+            toxenv: py312-test-predeps
 
     steps:
     - name: Checkout code

CHANGES.rst

@@ -10,6 +10,12 @@
 - ``read_spec()`` now detects whether given filename is FITS more consistently
   w.r.t. ``astropy``. [#384]
 
+- Compatibility with ``numpy`` 2.0 and ``astropy`` 6.1 by building C-extension
+  against ``numpy`` 2.x ABI. [#387]
+
+- Bumped minimum supported versions for Python to 3.10,
+  ``numpy`` to 1.23, ``astropy`` to 6.0, and ``scipy`` to 1.9. [#387]
+
 1.3.0 (2023-11-28)
 ==================
 

docs/index.rst

@@ -42,7 +42,7 @@ reported) or contact `STScI Help Desk <https://hsthelp.stsci.edu>`_.
 Installation and Setup
 ======================
 
-**synphot** works for Python 3.9 or later only. It requires the following
+**synphot** works for Python 3.10 or later only. It requires the following
 packages:
 
 * numpy

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
 requires = ["setuptools>=30.3.0",
             "setuptools_scm",
-            "numpy>=1.25"]
+            "numpy>=2.0.0rc1"]
 build-backend = "setuptools.build_meta"

setup.cfg

@@ -5,9 +5,6 @@ norecursedirs = build docs/_build synphot/src
 astropy_header = true
 doctest_plus = enabled
 doctest_subpackage_requires =
-    docs/index.rst = astropy>=5.3
-    docs/synphot/spectrum.rst = astropy>=5.3
-    docs/synphot/tutorials.rst = astropy>=5.3
     docs/synphot/filter_par.rst = numpy<2
 text_file_format = rst
 addopts = --doctest-rst --import-mode=append
@@ -19,9 +16,6 @@ filterwarnings =
     ignore:numpy\.ufunc size changed:RuntimeWarning
     ignore:distutils Version classes are deprecated:DeprecationWarning
     ignore:Class CCM89 defines class attributes
-    # Ignore numpy 2.0 warning, see https://github.com/astropy/astropy/pull/15495
-    # and https://github.com/scipy/scipy/pull/19275
-    ignore:.*numpy\.core.*:DeprecationWarning
 
 [metadata]
 name = synphot
@@ -52,10 +46,10 @@ zip_safe = False
 setup_requires =
     setuptools_scm
 install_requires =
-    numpy>=1.20
-    astropy>=5
-    scipy>=1.6
-python_requires = >=3.9
+    numpy>=1.23
+    astropy>=6
+    scipy>=1.9
+python_requires = >=3.10
 
 [options.extras_require]
 all =

synphot/blackbody.py

@@ -26,9 +26,6 @@
 
 __all__ = ['BlackBody1D', 'blackbody_nu', 'blackbody_lambda']
 
-# ASTROPY_LT_5_3
-__doctest_requires__ = {"BlackBody1D": ["astropy<5.3"]}
-
 with warnings.catch_warnings():
     warnings.simplefilter('ignore', RuntimeWarning)
     _has_buggy_expm1 = np.isnan(np.expm1(1000)) or np.isnan(np.expm1(1e10))
@@ -59,7 +56,7 @@ class BlackBody1D(Fittable1DModel):
     >>> from synphot.blackbody import BlackBody1D
     >>> bb = BlackBody1D()
     >>> bb(6000 * u.AA)  # doctest: +FLOAT_CMP
-    <Quantity 1.3585381201978953e-15 erg / (cm2 Hz s)>
+    <Quantity 1.35853828e-15 erg / (Hz s cm2)>
 
     .. plot::
         :include-source:

synphot/compat.py

@@ -2,15 +2,10 @@
 """Module to handle backward-compatibility."""
 import importlib
 
-import astropy
-from astropy.utils.introspection import minversion
-
 _optional_deps = ['specutils', 'dust_extinction']
 _deps = {k.upper(): k for k in _optional_deps}
 
-ASTROPY_LT_5_0 = not minversion(astropy, '5.0')
-
-__all__ = ['ASTROPY_LT_5_0'] + [f"HAS_{pkg}" for pkg in _deps]
+__all__ = [f"HAS_{pkg}" for pkg in _deps]
 
 
 def __getattr__(name):

synphot/models.py

@@ -23,7 +23,6 @@
 
 # LOCAL
 from synphot import units
-from synphot.compat import ASTROPY_LT_5_0
 from synphot.exceptions import SynphotError
 from synphot.utils import merge_wavelengths
 
@@ -228,10 +227,7 @@ def sampleset(self, step=None, minimal=False):
         if step is None:
             step = self.step
 
-        if ASTROPY_LT_5_0:
-            w1, w2 = self.bounding_box
-        else:
-            w1, w2 = tuple(self.bounding_box.bounding_box())
+        w1, w2 = tuple(self.bounding_box.bounding_box())
 
         if self._n_models == 1:
             w = self._calc_sampleset(w1, w2, step, minimal)
@@ -763,10 +759,7 @@ class Trapezoid1D(_models.Trapezoid1D):
     """
     def sampleset(self):
         """Return ``x`` array that samples the feature."""
-        if ASTROPY_LT_5_0:
-            x1, x4 = self.bounding_box
-        else:
-            x1, x4 = tuple(self.bounding_box.bounding_box())
+        x1, x4 = tuple(self.bounding_box.bounding_box())
         dw = self.width * 0.5
         x2 = self.x_0 - dw
         x3 = self.x_0 + dw

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{39,310,311,312}-test{,-alldeps,-oldestdeps,-devdeps,-predeps}{,-cov}
+    py{310,311,312}-test{,-alldeps,-oldestdeps,-devdeps,-predeps}{,-cov}
     codestyle
     twine
     bandit
@@ -36,9 +36,9 @@ deps =
 
     # The oldestdeps factor is intended to be used to install the oldest versions of all
     # dependencies that have a minimum version.
-    oldestdeps: numpy==1.20.*
-    oldestdeps: scipy==1.6.*
-    oldestdeps: astropy==5.0.*
+    oldestdeps: numpy==1.23.*
+    oldestdeps: scipy==1.9.*
+    oldestdeps: astropy==6.0.*
 
     # The devdeps factor is intended to be used to install the latest developer version
     # or nightly wheel of key dependencies.