diff --git a/datasette/app.py b/datasette/app.py
index 82562d15..460464ab 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -348,6 +348,7 @@ class Datasette:
                 conn.execute("SELECT load_extension('{}')".format(extension))
         if self.config("cache_size_kb"):
             conn.execute('PRAGMA cache_size=-{}'.format(self.config("cache_size_kb")))
+        # pylint: disable=no-member
         pm.hook.prepare_connection(conn=conn)
 
     async def table_exists(self, database, table):
@@ -467,7 +468,7 @@ class Datasette:
                     sqlite_extensions[extension] = result.fetchone()[0]
                 else:
                     sqlite_extensions[extension] = None
-            except Exception as e:
+            except Exception:
                 pass
         # Figure out supported FTS versions
         fts_versions = []
@@ -649,6 +650,7 @@ class Datasette:
         self.jinja_env.filters["quote_plus"] = lambda u: urllib.parse.quote_plus(u)
         self.jinja_env.filters["escape_sqlite"] = escape_sqlite
         self.jinja_env.filters["to_css_class"] = to_css_class
+        # pylint: disable=no-member
         pm.hook.prepare_jinja2_environment(env=self.jinja_env)
         app.add_route(IndexView.as_view(self), r"/<as_format:(\.jsono?)?$>")
         # TODO: /favicon.ico and /-/static/ deserve far-future cache expires
@@ -697,6 +699,7 @@ class Datasette:
         )
         self.register_custom_units()
         # On 404 with a trailing slash redirect to path without that slash:
+        # pylint: disable=unused-variable
         @app.middleware("response")
         def redirect_on_404_with_trailing_slash(request, original_response):
             if original_response.status == 404 and request.path.endswith("/"):
diff --git a/datasette/plugins.py b/datasette/plugins.py
index 2d2c62e4..245df6b3 100644
--- a/datasette/plugins.py
+++ b/datasette/plugins.py
@@ -5,6 +5,7 @@ from . import hookspecs
 DEFAULT_PLUGINS = (
     "datasette.publish.heroku",
     "datasette.publish.now",
+    "datasette.facets",
 )
 
 pm = pluggy.PluginManager("datasette")
diff --git a/datasette/views/base.py b/datasette/views/base.py
index 010099d9..764ad7dd 100644
--- a/datasette/views/base.py
+++ b/datasette/views/base.py
@@ -94,6 +94,7 @@ class RenderMixin(HTTPMethodView):
             for template_name in templates
         ]
         body_scripts = []
+        # pylint: disable=no-member
         for script in pm.hook.extra_body_script(
             template=template.name,
             database=context.get("database"),
@@ -148,6 +149,9 @@ class BaseView(RenderMixin):
             r.headers["Access-Control-Allow-Origin"] = "*"
         return r
 
+    async def data(self, request, database, hash, **kwargs):
+        raise NotImplementedError
+
     async def resolve_db_name(self, request, db_name, **kwargs):
         hash = None
         name = None
@@ -238,7 +242,7 @@ class BaseView(RenderMixin):
             if isinstance(response_or_template_contexts, response.HTTPResponse):
                 return response_or_template_contexts
             else:
-                data, extra_template_data, templates = response_or_template_contexts
+                data, _, _ = response_or_template_contexts
         except (sqlite3.OperationalError, InvalidSql) as e:
             raise DatasetteError(str(e), title="Invalid SQL", status=400)
 
@@ -269,7 +273,7 @@ class BaseView(RenderMixin):
                     if next:
                         kwargs["_next"] = next
                     if not first:
-                        data, extra_template_data, templates = await self.data(
+                        data, _, _ = await self.data(
                             request, database, hash, **kwargs
                         )
                     if first:
@@ -565,6 +569,7 @@ class BaseView(RenderMixin):
                 for column, value in zip(results.columns, row):
                     display_value = value
                     # Let the plugins have a go
+                    # pylint: disable=no-member
                     plugin_value = pm.hook.render_cell(
                         value=value,
                         column=column,
diff --git a/datasette/views/table.py b/datasette/views/table.py
index d1c1d8c4..5923ac92 100644
--- a/datasette/views/table.py
+++ b/datasette/views/table.py
@@ -108,6 +108,7 @@ class RowTableShared(BaseView):
                     continue
 
                 # First let the plugins have a go
+                # pylint: disable=no-member
                 plugin_display_value = pm.hook.render_cell(
                     value=value,
                     column=column,