Add requirement on packaging

Checking the version of `photutils` requires the `packaging` module. See https://github.com/spacetelescope/imexam/blob/da7e3c57cc51a4bf5a31ad444ff44c8b7e3f216f/imexam/imexamine.py#L67
spacetelescope · Nov 10, 2020 · 8d4da3e · 8d4da3e
1 parent d6f21d1
commit 8d4da3e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/setup.cfg b/setup.cfg
@@ -49,6 +49,7 @@ tests =
 
 photometry =
     photutils
+    packaging
 
 [build-system]
 requires = ["cython"]