fix: missing dependency, packaging (#57)

* fix: missing dependency, packaging

* fix lint

* unpin packaging

requirements.txt

@@ -2,8 +2,23 @@
 # This file is autogenerated by pip-compile
 # To update, run:
 #
-#    pip-compile 
+#    pip-compile
 #
 elasticsearch==7.0.5
-sqlalchemy==1.3.8
-urllib3==1.25.6           # via elasticsearch
+    # via elasticsearch-dbapi (setup.py)
+greenlet==1.0.0
+    # via sqlalchemy
+importlib-metadata==4.0.0
+    # via sqlalchemy
+packaging==20.9
+    # via elasticsearch-dbapi (setup.py)
+pyparsing==2.4.7
+    # via packaging
+sqlalchemy==1.4.9
+    # via elasticsearch-dbapi (setup.py)
+typing-extensions==3.7.4.3
+    # via importlib-metadata
+urllib3==1.25.6
+    # via elasticsearch
+zipp==3.4.1
+    # via importlib-metadata

setup.py

@@ -28,7 +28,7 @@
             "odelasticsearch.https = es.opendistro.sqlalchemy:ESHTTPSDialect",
         ]
     },
-    install_requires=["elasticsearch>7", "sqlalchemy"],
+    install_requires=["elasticsearch>7", "packaging<21.0", "sqlalchemy"],
     extras_require={"opendistro": ["requests_aws4auth", "boto3"]},
     author="Preset Inc.",
     author_email="[email protected]",