Permissive-license filter in eval repo discovery

sw_eval.py

@@ -113,7 +113,8 @@ def discover_eval_repos(n_repos, registry_slugs, quota=None):
         if page > 4:
             continue
         page_by_lang[lang] = page + 1
-        q = f"language:{lang} stars:800..100000 size:500..30000"
+        q = (f"language:{lang} stars:800..100000 size:500..30000 "
+             f"license:mit license:apache-2.0 license:bsd-3-clause")
         url = ("https://api.github.com/search/repositories?q=" + urllib.parse.quote(q)
                + f"&sort=stars&order=desc&per_page=30&page={page}")
         req = urllib.request.Request(url, headers={"User-Agent": "semanticwiki-eval"})