mavgen: cope with python 3.12

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false  # don't cancel if a job from the matrix fails
       matrix:
-        python-version: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
 
     steps:
       - uses: actions/checkout@v3

generator/mavgen.py

@@ -23,8 +23,10 @@
 '''
 
 from __future__ import print_function
-from future import standard_library
-standard_library.install_aliases()
+import sys
+if sys.version_info <= (3,10):
+    from future import standard_library
+    standard_library.install_aliases()
 from builtins import object
 import os
 import re

requirements.txt

@@ -1,6 +1,7 @@
 lxml>=3.6.0
 future>=0.15.2
 wheel>=0.37.1
+setuptools>=42
 
 # dev dependencies:
 pytest<=7.4.4