Fix tox config.

Author: stephrdev

.github/workflows/test.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   tests:
     name: "Python ${{ matrix.python-version }}"
-    runs-on: "ubuntu-latest"
+    runs-on: "ubuntu-20.04"
     services:
       redis:
         image: redis

pyproject.toml

@@ -32,7 +32,7 @@ packages = [{ include = "cacheback" }]
 include = ["LICENSE"]
 
 [tool.poetry.dependencies]
-python = ">=3.6,<4"
+python = ">=3.6.2,<4"
 importlib-metadata = {version = "*", python = "<3.8"}
 
 django = ">=2"
@@ -46,11 +46,13 @@ pytest-django = ">=4.1"
 pytest-cov = ">=2.10"
 pytest-isort = ">=1.2"
 pytest-flake8 = ">=1.0"
-pytest-black = {version = ">=0.3", python = ">=3.6.2,<4"}
+flake8 = "<5"
+pytest-black = {version = ">=0.3"}
 freezegun = ">=1.0"
 coverage = {version = ">=5.0", extras = ["toml"]}
 celery = ">=4"
 django-rq = ">=2"
+typing_extensions = { version = ">=3.10", python = "<3.10" }
 
 [tool.poetry.extras]
 celery = ["celery"]

tox.ini

@@ -21,11 +21,11 @@ deps =
 	django31: Django>=3.1,<3.2
 	django32: Django>=3.2,<3.3
 	django40: Django>=4.0,<4.1
-whitelist_externals =
+allowlist_externals =
 	poetry
 	sh
 skip_install = true
 commands =
-	poetry export --dev --without-hashes -o {toxworkdir}/requirements.txt
+	poetry export --with dev --without-hashes -o {toxworkdir}/requirements.txt
 	sh -c 'grep -v "^[dD]jango==" {toxworkdir}/requirements.txt | poetry run pip install --no-deps -r /dev/stdin'
-	poetry run pytest --isort --flake8 --black --cov
+	pytest --isort --flake8 --black --cov