UPD: required python >=3.9 for type annotations

Author: desty2k

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
       max-parallel: 2
       matrix:
         platform: [ ubuntu-latest, macos-latest, windows-latest ]
-        python-version: [ 3.6, 3.9 ]
+        python-version: [ 3.9 ]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

setup.py

@@ -19,7 +19,7 @@
     author_email='wojciech.wentland@int.pl',
     description='PyInstaller + Docker = CrossInstaller',
     long_description_content_type='text/markdown',
-    python_requires='>=3.6',
+    python_requires='>=3.9',
     zip_safe=False,  # don't use eggs
     long_description=long_desc,
 
@@ -42,9 +42,6 @@
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3 :: Only',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
 
         'Programming Language :: Python :: Implementation :: CPython',

tox.ini

@@ -6,16 +6,16 @@
 [tox]
 
 envlist =
-    {linux, darwin, windows}-{py36, py39}-{build}
+    {linux, darwin, windows}-{py39, py310}-{build}
     {linux}-{py39}-{lint}
     {linux}-{py39}-{safety}
     {linux}-{py39}-{metric}
     {linux}-{py39}-{release}
 
 [gh-actions]
 python =
-    3.6: py36
     3.9: py39
+    3.10: py310
 
 [gh-actions:env]
 PLATFORM =