diff --git a/pyproject.toml b/pyproject.toml
index 73e16214..a1775a02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -81,6 +81,10 @@ namespaces = false
 
 [tool.ruff]
 line-length = 99
-exclude = ['tests/assets'] # These are sample packages for tests to run under - we don't want ruff to mess with them.
-[tool.ruff.lint]
-select = ["E4", "E7", "E9", "F", "UP"]
+exclude = [
+    'tests/assets', # These are sample packages for tests to run under - we don't want ruff to mess with them.
+    'docs/', # Documentation configuration scripts
+]
+lint.select = ["A", "C4", "E4", "E7", "E9", "F", "FLY", "FURB", "INP", "PLE", "PLR", "PT", "RUF", "SIM", "UP"]
+lint.ignore = ["C408", "PLR2004", "PLR0913", "PT006", "PT007", "SIM108", "SIM118", "SIM300"]
+lint.per-file-ignores."tests/**/*.py" = [ "RUF012", "RUF059" ]
diff --git a/src/grimp/__init__.py b/src/grimp/__init__.py
index 642e4040..e75000e1 100644
--- a/src/grimp/__init__.py
+++ b/src/grimp/__init__.py
@@ -6,13 +6,13 @@
 from .main import build_graph
 
 __all__ = [
-    "Module",
     "DetailedImport",
     "DirectImport",
     "Import",
     "ImportGraph",
+    "Layer",
+    "Module",
     "PackageDependency",
     "Route",
     "build_graph",
-    "Layer",
 ]
diff --git a/src/grimp/adaptors/modulefinder.py b/src/grimp/adaptors/modulefinder.py
index c38dc057..2fae2956 100644
--- a/src/grimp/adaptors/modulefinder.py
+++ b/src/grimp/adaptors/modulefinder.py
@@ -147,9 +147,10 @@ def _module_name_from_filename(
         """
         internal_filename_and_path = filename_and_path[len(package_directory) :]
         internal_filename_and_path_without_extension = internal_filename_and_path[1:-3]
-        components = [package_name] + internal_filename_and_path_without_extension.split(
-            self.file_system.sep
-        )
+        components = [
+            package_name,
+            *internal_filename_and_path_without_extension.split(self.file_system.sep),
+        ]
         if components[-1] == "__init__":
             components.pop()
         return ".".join(components)
diff --git a/src/grimp/adaptors/packagefinder.py b/src/grimp/adaptors/packagefinder.py
index 55c5d28f..09d459f5 100644
--- a/src/grimp/adaptors/packagefinder.py
+++ b/src/grimp/adaptors/packagefinder.py
@@ -21,9 +21,14 @@ def determine_package_directories(
             logger.debug(f"sys.path: {sys.path}")
             raise ValueError(f"Could not find package '{package_name}' in your Python path.")
 
-        if spec.has_location and spec.origin:
-            if not self._is_a_package(spec, file_system) or self._has_a_non_namespace_parent(spec):
-                raise exceptions.NotATopLevelModule
+        if (
+            spec.has_location
+            and spec.origin
+            and (
+                not self._is_a_package(spec, file_system) or self._has_a_non_namespace_parent(spec)
+            )
+        ):
+            raise exceptions.NotATopLevelModule
 
         assert spec.submodule_search_locations  # This should be the case if spec.has_location.
         return set(spec.submodule_search_locations)
diff --git a/src/grimp/application/usecases.py b/src/grimp/application/usecases.py
index 4765b7ed..baa30b42 100644
--- a/src/grimp/application/usecases.py
+++ b/src/grimp/application/usecases.py
@@ -53,7 +53,7 @@ def build_graph(
 
     found_packages = _find_packages(
         file_system=file_system,
-        package_names=[package_name] + list(additional_package_names),
+        package_names=[package_name, *additional_package_names],
     )
 
     imports_by_module = _scan_packages(
diff --git a/tests/benchmarking/test_benchmarking.py b/tests/benchmarking/test_benchmarking.py
index aece8dad..e5ce4167 100644
--- a/tests/benchmarking/test_benchmarking.py
+++ b/tests/benchmarking/test_benchmarking.py
@@ -54,18 +54,12 @@ def large_graph():
                     heads=frozenset({"mypackage.domain.7960519247.6215972208"}),
                     middle=(),
                     tails=frozenset(
-                        {
-                            "mypackage.application.7537183614.6928774480.5676105139.3275676604"
-                            # noqa:E501
-                        }
+                        {"mypackage.application.7537183614.6928774480.5676105139.3275676604"}
                     ),
                 ),
                 Route(
                     heads=frozenset(
-                        {
-                            "mypackage.domain.6928774480.5676105139.1330171288.7588443317.4661445087"
-                            # noqa:E501
-                        }
+                        {"mypackage.domain.6928774480.5676105139.1330171288.7588443317.4661445087"}
                     ),
                     middle=(),
                     tails=frozenset({"mypackage.application.7537183614.3430454356.1518604543"}),
@@ -84,10 +78,7 @@ def large_graph():
                 ),
                 Route(
                     heads=frozenset(
-                        {
-                            "mypackage.domain.6928774480.1028759677.7960519247.2888779155.7486857426"
-                            # noqa:E501
-                        }
+                        {"mypackage.domain.6928774480.1028759677.7960519247.2888779155.7486857426"}
                     ),
                     middle=(),
                     tails=frozenset({"mypackage.application.7537183614.3430454356.1518604543"}),
@@ -139,18 +130,14 @@ def large_graph():
                     heads=frozenset(
                         {
                             "mypackage.application.7537183614.2538372545.1153384736.6297289996",
-                            # noqa:E501
                             "mypackage.application.7537183614.2538372545.1153384736.6404547812.6297289996",
-                            # noqa:E501
                         }
                     ),
                     middle=("mypackage.6398020133.9075581450.6529869526.6297289996",),
                     tails=frozenset(
                         {
                             "mypackage.plugins.5634303718.6180716911.7582995238.1039461003.2943193489",
-                            # noqa:E501
                             "mypackage.plugins.5634303718.6180716911.7582995238.1039461003.6322703811",
-                            # noqa:E501
                         }
                     ),
                 )
diff --git a/tests/unit/application/graph/test_chains.py b/tests/unit/application/graph/test_chains.py
index 3cf207ae..3fa3039e 100644
--- a/tests/unit/application/graph/test_chains.py
+++ b/tests/unit/application/graph/test_chains.py
@@ -1,3 +1,4 @@
+import re
 import pytest  # type: ignore
 
 from grimp.application.graph import ImportGraph
@@ -112,14 +113,14 @@ def test_find_shortest_chain_returns_none_if_not_exists(self):
     def test_raises_value_error_if_importer_not_present(self):
         graph = ImportGraph()
 
-        with pytest.raises(ValueError, match="Module foo is not present in the graph."):
+        with pytest.raises(ValueError, match=re.escape("Module foo is not present in the graph.")):
             graph.find_shortest_chain(importer="foo", imported="bar")
 
     def test_raises_value_error_if_imported_not_present(self):
         graph = ImportGraph()
         graph.add_module("foo")
 
-        with pytest.raises(ValueError, match="Module bar is not present in the graph."):
+        with pytest.raises(ValueError, match=re.escape("Module bar is not present in the graph.")):
             graph.find_shortest_chain(importer="foo", imported="bar")
 
     def test_find_shortest_chain_copes_with_cycle(self):
@@ -164,7 +165,7 @@ def test_demonstrate_nondeterminism_of_equal_chains(self):
 
         one_chain = (source, a, b, c, destination)
         other_chain = (source, d, e, f, destination)
-        assert (result == one_chain) or (result == other_chain)
+        assert result in (one_chain, other_chain)
 
     @pytest.mark.parametrize(
         "as_packages, expected_result",
@@ -201,7 +202,7 @@ def test_modules_with_shared_descendants_raises_value_error_when_as_packages_tru
         graph.add_module(importer)
         graph.add_module(imported)
 
-        with pytest.raises(ValueError, match="Modules have shared descendants."):
+        with pytest.raises(ValueError, match=re.escape("Modules have shared descendants.")):
             graph.find_shortest_chains(importer=importer, imported=imported, as_packages=True)
 
     @pytest.mark.parametrize(
diff --git a/tests/unit/application/graph/test_hierarchy.py b/tests/unit/application/graph/test_hierarchy.py
index 10b8922a..ce373dab 100644
--- a/tests/unit/application/graph/test_hierarchy.py
+++ b/tests/unit/application/graph/test_hierarchy.py
@@ -1,3 +1,4 @@
+import re
 import pytest  # type: ignore
 
 from grimp.application.graph import ImportGraph
@@ -33,7 +34,7 @@ def test_find_children_raises_exception_for_squashed_module():
 
     graph.add_module(module, is_squashed=True)
 
-    with pytest.raises(ValueError, match="Cannot find children of a squashed module."):
+    with pytest.raises(ValueError, match=re.escape("Cannot find children of a squashed module.")):
         graph.find_children(module)
 
 
@@ -75,7 +76,9 @@ def test_find_descendants_raises_exception_for_squashed_module():
 
     graph.add_module(module, is_squashed=True)
 
-    with pytest.raises(ValueError, match="Cannot find descendants of a squashed module."):
+    with pytest.raises(
+        ValueError, match=re.escape("Cannot find descendants of a squashed module.")
+    ):
         graph.find_descendants(module)
 
 
diff --git a/tests/unit/application/graph/test_layers.py b/tests/unit/application/graph/test_layers.py
index cb48d9b9..766ec2a3 100644
--- a/tests/unit/application/graph/test_layers.py
+++ b/tests/unit/application/graph/test_layers.py
@@ -83,7 +83,7 @@ def test_indirect_illegal_within_one_package(
         self, specify_container: bool, start: str, end: str, route_middle: list[str]
     ):
         graph = self._build_legal_graph()
-        import_pairs = _pairwise([start] + route_middle + [end])
+        import_pairs = _pairwise([start, *route_middle, end])
         for importer, imported in import_pairs:
             graph.add_import(importer=importer, imported=imported)
 
@@ -342,7 +342,7 @@ def test_demonstrate_nondeterminism_with_equal_length_forked_routes(self):
             ),
         }
 
-        assert (result == first_option) or (result == second_option)
+        assert result in (first_option, second_option)
 
     def _build_legal_graph(self):
         graph = ImportGraph()
@@ -479,7 +479,7 @@ def test_indirect_illegal_within_one_package(
         self, specify_container: bool, start: str, end: str, route_middle: list[str]
     ):
         graph = self._build_legal_graph()
-        import_pairs = _pairwise([start] + route_middle + [end])
+        import_pairs = _pairwise([start, *route_middle, end])
         for importer, imported in import_pairs:
             graph.add_import(importer=importer, imported=imported)
 
@@ -668,7 +668,7 @@ def test_indirect_illegal_across_two_packages(
         self, start: str, end: str, route_middle: list[str]
     ):
         graph = self._build_legal_graph()
-        import_pairs = _pairwise([start] + route_middle + [end])
+        import_pairs = _pairwise([start, *route_middle, end])
         for importer, imported in import_pairs:
             graph.add_import(importer=importer, imported=imported)
 
@@ -1104,12 +1104,12 @@ def _build_layers(self, layers: Iterable[Layer]):
         modules = []
         for layer in layers:
             assert len(layer.module_tails) == 1
-            module = list(layer.module_tails)[0]
+            module = next(iter(layer.module_tails))
             graph.add_module(module)
             modules.append(module)
 
         # Legal imports, from higher layer to immediate lower layer
-        for higher_module, lower_module in zip(modules[:-1], modules[1:]):
+        for higher_module, lower_module in itertools.pairwise(modules):
             graph.add_import(importer=higher_module, imported=lower_module)
 
         return graph
diff --git a/tests/unit/application/graph/test_manipulation.py b/tests/unit/application/graph/test_manipulation.py
index 1f00218b..8824647c 100644
--- a/tests/unit/application/graph/test_manipulation.py
+++ b/tests/unit/application/graph/test_manipulation.py
@@ -1,3 +1,4 @@
+import re
 import pytest  # type: ignore
 
 from grimp.application.graph import ImportGraph
@@ -119,7 +120,7 @@ def test_cannot_add_squashed_module_if_already_same_unsquashed_module(self):
 
         with pytest.raises(
             ValueError,
-            match=(
+            match=re.escape(
                 "Cannot add a squashed module when it is already present in the graph as an "
                 "unsquashed module, or vice versa."
             ),
@@ -134,7 +135,7 @@ def test_cannot_add_unsquashed_module_if_already_same_squashed_module(self):
 
         with pytest.raises(
             ValueError,
-            match=(
+            match=re.escape(
                 "Cannot add a squashed module when it is already present in the graph as an "
                 "unsquashed module, or vice versa."
             ),
@@ -148,7 +149,7 @@ def test_cannot_add_descendant_of_squashed_module(self, module_name):
         graph.add_module("mypackage.foo", is_squashed=True)
 
         with pytest.raises(
-            ValueError, match="Module is a descendant of squashed module mypackage.foo."
+            ValueError, match=re.escape("Module is a descendant of squashed module mypackage.foo.")
         ):
             graph.add_module(module_name)
 
diff --git a/tests/unit/application/test_scanning.py b/tests/unit/application/test_scanning.py
index bc8d1f6b..c0c1447a 100644
--- a/tests/unit/application/test_scanning.py
+++ b/tests/unit/application/test_scanning.py
@@ -730,13 +730,6 @@ def my_function():
         ("import namespace.foo.green.alpha.one", "namespace.foo.green"),
         ("from namespace.foo.green.alpha import one", "namespace.foo.green"),
         ("from ..green.alpha import one", "namespace.foo.green"),
-        ("from .. import green", "namespace.foo.green"),
-        ("import namespace.foo.green.alpha", "namespace.foo.green"),
-        ("from namespace.foo.green import alpha", "namespace.foo.green"),
-        ("from ..green import alpha", "namespace.foo.green"),
-        ("import namespace.foo.green.alpha.one", "namespace.foo.green"),
-        ("from namespace.foo.green.alpha import one", "namespace.foo.green"),
-        ("from ..green.alpha import one", "namespace.foo.green"),
     ),
 )
 def test_external_package_imports_for_namespace_packages(statement, expected_module_name):
diff --git a/tests/unit/application/test_usecases.py b/tests/unit/application/test_usecases.py
index 932fb4d9..e7f2ae26 100644
--- a/tests/unit/application/test_usecases.py
+++ b/tests/unit/application/test_usecases.py
@@ -1,3 +1,4 @@
+import re
 from unittest.mock import sentinel
 import pytest  # type: ignore
 
@@ -63,7 +64,9 @@ class FakePackageFinder(BaseFakePackageFinder):
         # Check that the external packages are squashed modules.
         if include_external_packages:
             for module in ("external", "decimal"):
-                with pytest.raises(ValueError, match="Cannot find children of a squashed module."):
+                with pytest.raises(
+                    ValueError, match=re.escape("Cannot find children of a squashed module.")
+                ):
                     graph.find_children(module)
 
     def test_boolean_additional_package_raises_type_error(self):
@@ -75,7 +78,7 @@ def test_boolean_additional_package_raises_type_error(self):
         as the second argument, and it's possible it might have been called
         as a positional argument.
         """
-        with pytest.raises(TypeError, match="Package names must be strings, got bool."):
+        with pytest.raises(TypeError, match=re.escape("Package names must be strings, got bool.")):
             usecases.build_graph("mypackage", True)
 
     @pytest.mark.parametrize(