Use Python 3.8 for flake8, mypy etc.

.github/workflows/flake8.yml

@@ -35,7 +35,7 @@ jobs:
         if: steps.changes.outputs.code == 'true'
         uses: "actions/setup-python@v4"
         with:
-          python-version: "3.6"
+          python-version: "3.8"
 
       - name: Install dependencies 🔧
         if: steps.changes.outputs.code == 'true'

.github/workflows/mypy.yml

@@ -40,7 +40,7 @@ jobs:
         if: steps.changes.outputs.code == 'true'
         uses: "actions/setup-python@v4"
         with:
-          python-version: "3.6"
+          python-version: "3.8"
 
       - name: Install dependencies 🔧
         run: |

pyproject.toml

@@ -161,7 +161,7 @@ platforms = [ "Windows", "macOS", "Linux",]
 license-key = "MIT"
 
 [tool.mypy]
-python_version = "3.6"
+python_version = "3.8"
 namespace_packages = true
 check_untyped_defs = true
 warn_unused_ignores = true

repo_helper.yml

@@ -13,7 +13,7 @@ use_flit: true
 min_coverage: 90
 docs_fail_on_warning: true
 mypy_version: "0.971"
-python_deploy_version: 3.6
+python_deploy_version: 3.8
 
 conda_extras:
  - none

tox.ini

@@ -57,7 +57,7 @@ test =
     pypy38-click{7.1,8.0,8.1}
     pypy39-click{7.1,8.0,8.1}
 qa = mypy, lint
-cov = py36-click7.1, coverage
+cov = py38-click7.1, coverage
 
 [testenv:.package]
 setenv =
@@ -100,7 +100,7 @@ commands =
     check-wheel-contents dist/
 
 [testenv:lint]
-basepython = python3.6
+basepython = python3.8
 changedir = {toxinidir}
 ignore_errors = True
 skip_install = False
@@ -130,15 +130,15 @@ deps =
 commands = python3 -m flake8_rst_docstrings_sphinx consolekit tests --allow-toolbox {posargs}
 
 [testenv:perflint]
-basepython = python3.6
+basepython = python3.8
 changedir = {toxinidir}
 ignore_errors = True
 skip_install = True
 deps = perflint
 commands = python3 -m perflint consolekit {posargs}
 
 [testenv:mypy]
-basepython = python3.6
+basepython = python3.8
 ignore_errors = True
 changedir = {toxinidir}
 deps =
@@ -148,15 +148,15 @@ deps =
 commands = mypy consolekit tests {posargs}
 
 [testenv:pyup]
-basepython = python3.6
+basepython = python3.8
 skip_install = True
 ignore_errors = True
 changedir = {toxinidir}
 deps = pyupgrade-directories
 commands = pyup_dirs consolekit tests --py36-plus --recursive
 
 [testenv:coverage]
-basepython = python3.6
+basepython = python3.8
 skip_install = True
 ignore_errors = True
 whitelist_externals = /bin/bash