Use nox instead of tox

Author: bartTC

noxfile.py

@@ -0,0 +1,37 @@
+import nox
+
+nox.options.default_venv_backend = "uv"
+
+python_versions = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+
+
+@nox.session(python=python_versions)
+def tests(session):
+    session.install("--upgrade", "pip", "uv")
+    session.install("html5lib==0.999999999", "django==1.10", "pyglet==2.0.dev23")
+    session.install(".")  # Assuming pip-check is in the current project
+
+    session.run("pip-check")
+    session.run("pip-check", "--help")
+    session.run(
+        "pip-check",
+        "--ascii",
+        "--not-required",
+        "--full-version",
+        "--hide-unchanged",
+        "--show-update",
+    )
+    session.run("pip-check", "--user")
+    session.run("pip-check", "--local")
+
+    session.run("pip-check", "--cmd=uv pip")
+    session.run("pip-check", "--cmd=uv pip", "--help")
+    session.run(
+        "pip-check", "--cmd=uv pip", "--ascii", "--full-version", "--hide-unchanged"
+    )
+
+
+@nox.session
+def readme(session):
+    session.install("markdown-it-py")
+    session.run("markdown-it", "README.md", "/dev/null", external=True)

tox.ini

@@ -5,11 +5,13 @@
 toxworkdir=/tmp/tox/pip-check
 envlist=
     readme
-    py{38,39,310,311,312,312}
+    py{36,37,38,39,310,311,312,312,313}
 
 
 [gh-actions]
 python =
+    "3.6": py36
+    "3.7": py37
     "3.8": py38
     "3.9": py39
     "3.10": py310
@@ -24,29 +26,25 @@ deps=
     pyglet==2.0.dev23
 
 commands=
-    # Always test against latest pip version
-    pip install -U pip
+    # Always test against latest pip and uv version
+    pip install -U pip uv
+
     pip-check
-    pip-check --cmd=pip
     pip-check --help
     pip-check --ascii --not-required --full-version --hide-unchanged --show-update
     pip-check --user
     pip-check --local
 
-    pip-check
     pip-check --cmd="uv pip"
     pip-check --cmd="uv pip" --help
-    pip-check --cmd="uv pip" --ascii --not-required --full-version --hide-unchanged --show-update
-    pip-check --cmd="uv pip" --user
-    pip-check --cmd="uv pip" --local
-
+    pip-check --cmd="uv pip" --ascii --full-version --hide-unchanged
 
 [testenv:readme]
 skip_install = True
+basepython = python3.13
 deps =
-    docutils
-    Pygments
+    markdown-it-py
 allowlist_externals =
-    rst2html.py
+    markdown-it
 commands =
-    rst2html.py --report=info --halt=warning README.rst /dev/null
+    markdown-it README.md /dev/null