TST: Unpin tox

.github/workflows/ci_workflows.yml

@@ -83,7 +83,7 @@ jobs:
             toxposargs: --open-files
 
           - name: Test with old dependencies
-            os: ubuntu-18.04
+            os: ubuntu-20.04
             python: 3.8
             toxenv: py38-test-oldestdeps
             toxposargs: --open-files
@@ -112,8 +112,7 @@ jobs:
         python-version: ${{ matrix.python }}
     - name: Install Python dependencies
       run: |
-        python -m pip install --upgrade pip
-        python -m pip install "tox<4"
+        python -m pip install --upgrade pip tox
     - name: Run tests
       run: tox -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}
     - name: Upload coverage to codecov

.github/workflows/predeps_workflow.yml

@@ -46,7 +46,6 @@ jobs:
         python-version: ${{ matrix.python }}
     - name: Install Python dependencies
       run: |
-        python -m pip install --upgrade pip
-        python -m pip install "tox<4"
+        python -m pip install --upgrade pip tox
     - name: Run tests
       run: tox -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}

synphot/binning.py

@@ -8,7 +8,7 @@
 from astropy import units as u
 
 # LOCAL
-from . import exceptions
+from synphot import exceptions
 
 __all__ = ['calculate_bin_edges', 'calculate_bin_widths',
            'calculate_bin_centers', 'wave_range', 'pixel_range']
@@ -41,7 +41,7 @@ def _slow_calcbinflux(len_binwave, i_beg, i_end, avflux, deltaw):
 # Try to import the C version of calcbinflux, otherwise fall back
 # to the Python implementation above.
 try:
-    from . import synphot_utils
+    from synphot import synphot_utils
 except ImportError:
     calcbinflux = _slow_calcbinflux
 else:

synphot/blackbody.py

@@ -22,7 +22,7 @@
 from astropy.modeling.parameters import Parameter
 from astropy.utils.exceptions import AstropyUserWarning
 
-from .units import FNU, FLAM
+from synphot.units import FNU, FLAM
 
 __all__ = ['BlackBody1D', 'blackbody_nu', 'blackbody_lambda']
 

synphot/models.py

@@ -22,10 +22,10 @@
 from astropy.utils.exceptions import AstropyUserWarning
 
 # LOCAL
-from . import units
-from .compat import ASTROPY_LT_5_0
-from .exceptions import SynphotError
-from .utils import merge_wavelengths
+from synphot import units
+from synphot.compat import ASTROPY_LT_5_0
+from synphot.exceptions import SynphotError
+from synphot.utils import merge_wavelengths
 
 __all__ = ['BlackBody1D', 'BlackBodyNorm1D', 'Box1D', 'ConstFlux1D',
            'Empirical1D', 'Gaussian1D', 'GaussianAbsorption1D',

synphot/observation.py

@@ -18,9 +18,10 @@
                                       AstropyDeprecationWarning)
 
 # LOCAL
-from . import binning, exceptions, units, utils
-from .models import Empirical1D
-from .spectrum import BaseSourceSpectrum, SourceSpectrum, SpectralElement
+from synphot import binning, exceptions, units, utils
+from synphot.models import Empirical1D
+from synphot.spectrum import (BaseSourceSpectrum, SourceSpectrum,
+                              SpectralElement)
 
 __all__ = ['Observation']
 

synphot/reddening.py

@@ -9,11 +9,11 @@
 from astropy import units as u
 
 # LOCAL
-from . import exceptions, specio, units
-from .compat import HAS_DUST_EXTINCTION
-from .config import Conf
-from .models import Empirical1D
-from .spectrum import BaseUnitlessSpectrum
+from synphot import exceptions, specio, units
+from synphot.compat import HAS_DUST_EXTINCTION
+from synphot.config import Conf
+from synphot.models import Empirical1D
+from synphot.spectrum import BaseUnitlessSpectrum
 
 __all__ = ['ExtinctionModel1D', 'ReddeningLaw', 'ExtinctionCurve',
            'etau_madau']

synphot/specio.py

@@ -16,8 +16,7 @@
 from astropy.utils.exceptions import AstropyUserWarning
 
 # LOCAL
-from . import exceptions, units
-from synphot import __version__
+from synphot import __version__, exceptions, units
 
 __all__ = ['read_remote_spec', 'read_spec', 'read_ascii_spec',
            'read_fits_spec', 'write_fits_spec']

synphot/spectrum.py

@@ -20,9 +20,9 @@
 from astropy.utils import metadata
 
 # LOCAL
-from . import exceptions, specio, units, utils
-from .config import Conf, conf
-from .models import ConstFlux1D, Empirical1D, get_waveset, get_metadata
+from synphot import exceptions, specio, units, utils
+from synphot.config import Conf, conf
+from synphot.models import ConstFlux1D, Empirical1D, get_waveset, get_metadata
 
 __all__ = ['BaseSpectrum', 'BaseSourceSpectrum', 'SourceSpectrum',
            'BaseUnitlessSpectrum', 'SpectralElement']
@@ -874,7 +874,7 @@ def to_spectrum1d(self, wavelengths=None, **kwargs):
             ``specutils`` is not installed.
 
         """
-        from .compat import HAS_SPECUTILS
+        from synphot.compat import HAS_SPECUTILS
 
         if not HAS_SPECUTILS:  # pragma: no cover
             raise ImportError('specutils must be installed to use this method')

synphot/thermal.py

@@ -6,9 +6,9 @@
 from astropy.io import fits
 
 # LOCAL
-from . import exceptions, specio, units
-from .models import BlackBody1D, Empirical1D
-from .spectrum import BaseUnitlessSpectrum, SourceSpectrum
+from synphot import exceptions, specio, units
+from synphot.models import BlackBody1D, Empirical1D
+from synphot.spectrum import BaseUnitlessSpectrum, SourceSpectrum
 
 __all__ = ['ThermalSpectralElement']
 

synphot/units.py

@@ -106,7 +106,7 @@ def spectral_density_count(wav, area):
         List of equivalencies.
 
     """
-    from .binning import calculate_bin_widths, calculate_bin_edges
+    from synphot.binning import calculate_bin_widths, calculate_bin_edges
 
     wav = wav.to(u.AA, equivalencies=u.spectral())
     area = area.to(AREA)
@@ -221,7 +221,7 @@ def _convert_flux(wavelengths, fluxes, out_flux_unit, area=None,
 
     # VEGAMAG
     if VEGAMAG.to_string() in flux_unit_names:
-        from .spectrum import SourceSpectrum
+        from synphot.spectrum import SourceSpectrum
 
         if not isinstance(vegaspec, SourceSpectrum):
             raise exceptions.SynphotError('Vega spectrum is missing.')

synphot/utils.py

@@ -14,7 +14,7 @@
 from astropy.utils.data import download_file
 
 # LOCAL
-from . import exceptions, units
+from synphot import exceptions, units
 
 __all__ = ['overlap_status', 'validate_totalflux', 'validate_wavelengths',
            'generate_wavelengths', 'merge_wavelengths', 'download_data']
@@ -289,7 +289,7 @@ def download_data(path_root, verbose=True, dry_run=False):
         A list of downloaded files.
 
     """
-    from .config import conf  # Avoid potential circular import
+    from synphot.config import conf  # Avoid potential circular import
     BASE_HOST = 'https://ssb.stsci.edu/trds/'
 
     if path_root is not None:

tox.ini

@@ -8,13 +8,11 @@ envlist =
 requires =
     setuptools >= 30.3.0
     pip >= 19.3.1
-    tox < 4
-isolated_build = true
 
 [testenv]
 
 # Pass through the following environemnt variables which are needed for the CI
-passenv = HOME WINDIR CC CI
+passenv = HOME,WINDIR,CC,CI
 
 # Run the tests in a temporary directory to make sure that we don't import
 # package from the source tree
@@ -45,7 +43,6 @@ deps =
 
     # The devdeps factor is intended to be used to install the latest developer version
     # or nightly wheel of key dependencies.
-    devdeps: git+https://github.com/astropy/astropy.git@main#egg=astropy
     devdeps: git+https://github.com/astropy/specutils.git@main#egg=specutils
 
     cov: pytest-cov
@@ -56,6 +53,7 @@ extras =
     alldeps: all
 
 commands =
+    devdeps: pip install -U -i https://pypi.anaconda.org/astropy/simple astropy --pre
     pip freeze
     !cov: pytest --pyargs synphot {toxinidir}/docs {posargs}
     cov: pytest --pyargs synphot {toxinidir}/docs --cov synphot --cov-config={toxinidir}/setup.cfg {posargs}
@@ -97,6 +95,7 @@ commands =
 changedir = docs
 description = check the links in the HTML docs
 extras = docs
+allowlist_externals = make
 commands =
     pip freeze
     make linkcheck