Linter will now hint if the license_family fields in the about section doesn't exist

conda_smithy/lint_recipe.py

@@ -633,6 +633,10 @@ def lintify(meta, recipe_dir=None, conda_forge=False):
     if set(parsed_exceptions) - expected_exceptions:
         hints.append("License exception is not an SPDX exception.")
 
+    # 5: recommend license_family
+    if "license_family" not in about_section:
+        hints.append("license_family entry is missing, but is recommended.")
+
     return lints, hints
 
 

news/req-lic.rst

@@ -0,0 +1,25 @@
+**Added:**
+
+* Linter will now hint if the ``license_family`` fields in the about section
+  doesn't exist.
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>
+

tests/test_lint_recipe.py

@@ -1001,6 +1001,25 @@ def test_build_sh_with_shellcheck_findings(self):
         )
         assert len(hints) < 100
 
+    def test_no_licenses(self):
+        meta = {"about": {"url": "http://example.com"}}
+        lints, hints = linter.lintify(meta)
+        self.assertIn(
+            "The license item is expected in the about section.", lints,
+        )
+        self.assertIn(
+            "license_family entry is missing, but is recommended.", hints
+        )
+
+        meta["about"]["license"] = "BSD-3-Clause"
+        lints, hints = linter.lintify(meta)
+        self.assertIn(
+            "license_file entry is missing, but is required.", lints,
+        )
+        self.assertIn(
+            "license_family entry is missing, but is recommended.", hints
+        )
+
 
 @pytest.mark.cli
 class TestCLI_recipe_lint(unittest.TestCase):