deps: backport dataclasses for Python 3.6

Dataclasses would be a really convenient approach to provide box.error support. They are supported in Python since 3.7, but this package make it able to introduce their support in Python 3.6 which we still support. Part of #240
tarantool · Oct 13, 2022 · a1409b8 · a1409b8
1 parent b7d9791
commit a1409b8
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diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,4 @@
 msgpack>=1.0.4
 pandas
 pytz
+dataclasses; python_version <= '3.6'