chore: Clean up mentions of the mypy plugin

docs/conf.py

@@ -96,6 +96,7 @@
 
 ## myst_parser
 myst_parser_config = {"myst_enable_extensions": ["rst_eval_roles"]}
+nitpick_ignore = [("myst", "group-rules")]
 
 ## numpydoc
 numpydoc_class_members_toctree = False

docs/guides/faq.md

@@ -32,17 +32,4 @@ class UserSchema(dy.Schema):
 
 ## How do I fix the ruff error `First argument of a method should be named self`?
 
-If you are using [`ruff`](https://docs.astral.sh/ruff/) and introduce custom rules for your schemas, `ruff` will create
-the following linting error:
-
-```
-N805 First argument of a method should be named `self`
-```
-
-To fix this, you'll need to let `ruff` know that the `@dy.rule` decorator is applied to classmethods. This can easily
-be done by adding the following to your `pyproject.toml`:
-
-```toml
-[tool.ruff.lint.pep8-naming]
-classmethod-decorators = ["dataframely.rule"]
-```
+See our documentation on [group rules](./quickstart.md#group-rules).

docs/guides/quickstart.md

@@ -95,12 +95,11 @@ in order to produce exactly one value per group:
 in group rules, the "input" that the expression is evaluated on is a set of rows.
 
 ````{note}
-If you are using `mypy` to type check your code, the usage of rules requires you to use the dataframely `mypy` plugin.
-In order to use it, add the following to your `pyproject.toml`:
+If you are using [`ruff`](https://docs.astral.sh/ruff/) to lint your code, you'll need to tell `ruff` to treat rules like classmethods. To this end, you can add the following to your `pyproject.toml`:
 
 ```toml
-    [tool.mypy]
-    plugins = ["dataframely.mypy"]
+[tool.ruff.lint.pep8-naming]
+classmethod-decorators = ["dataframely.rule"]
 ```
 
 ````

pyproject.toml

@@ -116,4 +116,4 @@ markers = [
 testpaths = ["tests"]
 
 [tool.coverage.run]
-omit = ["dataframely/mypy.py", "dataframely/testing/generate.py"]
+omit = ["dataframely/testing/generate.py"]