Fix macOS builds

auxTel/SConscript

@@ -14,9 +14,12 @@ for name in ("PYTHONPATH", "LD_LIBRARY_PATH",
 # we may need an explicit library load path specified in the command
 libpathstr = lsst.sconsUtils.utils.libraryLoaderEnvironment()
 
+# We always run these commands with an explicit python rather than relying on the shebang
+python = "{} python".format(libpathstr)
+
 pipe_tasks_dir = getPackageDir('pipe_tasks')
 data_dir = getPackageDir('obs_lsst_data')
-command = (f"{pipe_tasks_dir}/bin/ingestDefects.py auxTel/CALIB/ {data_dir}/auxTel/defects "+
+command = (f"{python} {pipe_tasks_dir}/bin/ingestDefects.py auxTel/CALIB/ {data_dir}/auxTel/defects "+
             "--calib auxTel/CALIB --config clobber=True")
 commandInst = env.Command('CALIB/calibRegistry.sqlite3', [], command)
 env.Depends(commandInst, lsst.sconsUtils.targets["python"])