Explicitly bring in setuptools for docs target

Author: Zoran Simic

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name="portable-python",
-    setup_requires="setupmeta",
+    setup_requires=["setupmeta"],
     versioning="dev",
     author="Zoran Simic zoran@simicweb.com",
     keywords="python, portable, binary",

tox.ini

@@ -30,10 +30,13 @@ deps = ruff
 commands = ruff check --fix
            ruff format
 
+# Old check-manifest + readme-renderer, see if there's better out there nowadays
 [testenv:docs]
 skip_install = True
 deps = check-manifest
        readme-renderer
+       pip
+       setuptools
 commands = check-manifest
            python setup.py check --strict --restructuredtext