Add dataclasses backport package to dependencies for Python 3.6 (#690)

* Add `dataclasses` backport package to dependencies for Python 3.6

* Run `apt-get update` before installing (fixes CI)

.github/workflows/publish.yml

@@ -182,6 +182,7 @@ jobs:
 
       - name: Install system dependencies
         run: |
+          sudo apt-get update
           sudo apt-get install -y libsnappy-dev libkrb5-dev
       - name: Install python dependencies
         run: |

.github/workflows/tests.yml

@@ -26,6 +26,7 @@ jobs:
 
     - name: Install system dependencies
       run: |
+        sudo apt-get update
         sudo apt-get install -y libsnappy-dev libkrb5-dev
 
     - name: Get pip cache dir
@@ -267,6 +268,7 @@ jobs:
 
     - name: Install system dependencies
       run: |
+        sudo apt-get update
         sudo apt-get install -y libsnappy-dev libkrb5-dev krb5-user
 
     - name: Get pip cache dir

CHANGES.rst

@@ -9,6 +9,9 @@ Allow group coordinator to close when all brokers are unavailable
 681.bugfix
 Exclude `.so` from source distribution
 
+689.bugfix
+Add `dataclasses` backport package to dependencies for Python 3.6
+
 
 0.7.0 (2020-10-28)
 ==================

setup.py

@@ -98,7 +98,10 @@ def build_extension(self, ext):
             raise BuildFailed()
 
 
-install_requires = ["kafka-python>=2.0.0"]
+install_requires = [
+    "kafka-python>=2.0.0",
+    "dataclasses>=0.5; python_version<'3.7'",
+]
 
 PY_VER = sys.version_info