Pin setuptools to <72 for now.

.github/workflows/ci.yml

@@ -148,7 +148,7 @@ jobs:
 
                 # Do these three first to clarify potential conflicts
                 pip install -U numpy
-                pip install -U setuptools
+                pip install -U "setuptools<72"
                 pip install -U wheel
 
                 # Standard dependencies

.github/workflows/wheels.yml

@@ -125,7 +125,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install -U pip
-          pip install -U numpy setuptools
+          pip install -U numpy "setuptools<72"
           pip install -U -r requirements.txt
 
       - name: Download wheels

conda_requirements.txt

@@ -1,6 +1,6 @@
 # The requirements packages that can be installed with
 #    conda install -y -c conda-forge --file conda_requirements.txt
-setuptools>=38
+setuptools>=38,<72
 numpy>=1.17
 astropy>=2.0
 pybind11>=2.2

pyproject.toml

@@ -1,2 +1,2 @@
 [build-system]
-requires = ["setuptools>=38", "wheel", "pybind11>=2.2"]
+requires = ["setuptools>=38,<72", "wheel", "pybind11>=2.2"]

requirements.txt

@@ -4,7 +4,7 @@
 # These are in conda_requirements.txt.  If using that, you may prefer to do
 #   conda install -c conda-forge --file conda_requirements.txt
 # prior to running pip install -r requirements.txt
-setuptools>=38
+setuptools>=38,<72
 numpy>=1.17
 astropy>=2.0
 pybind11>=2.2

setup.py

@@ -1228,6 +1228,9 @@ def run(self):
         self.distribution.script_install_dir = self.install_dir
 
 class my_test(test):
+    # TODO: setuptools v72 deprecated python setup.py test, so we need to figure out another
+    # way to test the C++ code.  For now, we are pinning setuptools to <72.
+
     # cf. https://pytest.readthedocs.io/en/2.7.3/goodpractises.html
     user_options = [('njobs=', 'j', "Number of jobs to use in py.test")]
 
@@ -1340,7 +1343,7 @@ def run_tests(self):
               undef_macros = undef_macros,
               extra_link_args = ["-lfftw3"])
 
-build_dep = ['setuptools>=38', 'pybind11>=2.2', 'numpy>=1.17']
+build_dep = ['setuptools>=38,<72', 'pybind11>=2.2', 'numpy>=1.17']
 run_dep = ['astropy', 'LSSTDESC.Coord']
 test_dep = ['pytest', 'pytest-xdist', 'pytest-timeout', 'nose', 'scipy', 'pyyaml']
 # Note: Even though we don't use nosetests, nose is required for some tests to work.