Add looseversion dependance for py3.12

fixes #387
sncosmo · Jan 30, 2024 · 64f70e4 · 64f70e4
1 parent 5b58453
commit 64f70e4
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/setup.cfg b/setup.cfg
@@ -27,6 +27,7 @@ zip_safe = False
 install_requires =
     astropy>=3.1
     extinction>=0.4.4
+    looseversion>=1.0.0
     numpy>=1.14.5   # 1.14.6 seems to work but not with oldest-supported-numpy
     pyyaml>=3.13
     scipy>=1.3.0
@@ -36,6 +37,7 @@ python_requires = >=3.7
 oldestdeps = # Oldest versions supported, used for tests.
     astropy==3.1
     extinction==0.4.4
+    looseversion==1.0.0
     numpy==1.14.5
     pyyaml==3.13
     scipy==1.3.0

diff --git a/sncosmo/fitting.py b/sncosmo/fitting.py
@@ -396,7 +396,11 @@ def _run_iminuit(chisq, parameter_names, start_values, start_errors, bounds,
 
     # The iminuit API changed significantly in version 2. Handle both the new
     # and old APIs.
-    from distutils.version import LooseVersion
+    try:
+        from distutils.version import LooseVersion
+    except ModuleNotFoundError:
+        # distutils was dropped in python 2.12
+        from looseversion import LooseVersion
     iminuit_version = LooseVersion(iminuit.__version__)
 
     if verbose: