diff --git a/tests/packages/importlib_editable/CMakeLists.txt b/tests/packages/importlib_editable/CMakeLists.txt
new file mode 100644
index 00000000..7a96fb06
--- /dev/null
+++ b/tests/packages/importlib_editable/CMakeLists.txt
@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.15...3.26)
+project(${SKBUILD_PROJECT_NAME} LANGUAGES C)
+
+find_package(
+  Python
+  COMPONENTS Interpreter Development.Module
+  REQUIRED)
+
+python_add_library(emod MODULE emod.c WITH_SOABI)
+install(TARGETS emod DESTINATION .)
+install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/pmod.py" DESTINATION .)
+
+add_subdirectory(pkg)
diff --git a/tests/packages/importlib_editable/emod.c b/tests/packages/importlib_editable/emod.c
new file mode 100644
index 00000000..3e71f04e
--- /dev/null
+++ b/tests/packages/importlib_editable/emod.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_module = {PyModuleDef_HEAD_INIT, "emod",
+                                             NULL, -1, emod_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod(void) {
+  return PyModule_Create(&emod_module);
+}
diff --git a/tests/packages/importlib_editable/emod.pyi b/tests/packages/importlib_editable/emod.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/emod.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/CMakeLists.txt b/tests/packages/importlib_editable/pkg/CMakeLists.txt
new file mode 100644
index 00000000..9db38f05
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/CMakeLists.txt
@@ -0,0 +1,8 @@
+python_add_library(emod_a MODULE emod_a.c WITH_SOABI)
+
+install(TARGETS emod_a DESTINATION pkg/)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/testfile" "This is the file")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/testfile" DESTINATION pkg/)
+
+add_subdirectory(sub_a)
+add_subdirectory(sub_b)
diff --git a/tests/packages/importlib_editable/pkg/__init__.py b/tests/packages/importlib_editable/pkg/__init__.py
new file mode 100644
index 00000000..b13f9db0
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/__init__.py
@@ -0,0 +1,32 @@
+# Don't let ruff sort imports in this file, we want to keep them with the comments as is
+# for clarity.
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level zero import global modules
+from pmod import square as psquare
+from emod import square as esquare
+
+# Level one pure modules
+from .pmod_a import square as psquare_a
+
+# Level one extension modules
+from .emod_a import square as esquare_a
+
+# Level one subpackages
+from . import sub_a
+
+# Level two pure modules
+from .sub_a.pmod_b import square as psquare_b
+
+# Level two extension modules
+from .sub_a.emod_b import square as esquare_b
+
+# Level two subpackages
+from .sub_b import sub_c
+
+# Level three pure modules
+from .sub_b.sub_c.pmod_d import square as psquare_d
+
+# Level three extension modules
+from .sub_b.sub_c.emod_d import square as esquare_d
diff --git a/tests/packages/importlib_editable/pkg/emod_a.c b/tests/packages/importlib_editable/pkg/emod_a.c
new file mode 100644
index 00000000..043116ca
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/emod_a.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_a_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_a_module = {PyModuleDef_HEAD_INIT, "emod_a",
+                                             NULL, -1, emod_a_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod_a(void) {
+  return PyModule_Create(&emod_a_module);
+}
diff --git a/tests/packages/importlib_editable/pkg/emod_a.pyi b/tests/packages/importlib_editable/pkg/emod_a.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/emod_a.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/pmod_a.py b/tests/packages/importlib_editable/pkg/pmod_a.py
new file mode 100644
index 00000000..c84f2b71
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/pmod_a.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level one import sibling
+from .emod_a import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pkg/sub_a/CMakeLists.txt b/tests/packages/importlib_editable/pkg/sub_a/CMakeLists.txt
new file mode 100644
index 00000000..3e159b33
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_a/CMakeLists.txt
@@ -0,0 +1,5 @@
+python_add_library(emod_b MODULE emod_b.c WITH_SOABI)
+
+install(TARGETS emod_b DESTINATION pkg/sub_a)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/testfile" "This is the file")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/testfile" DESTINATION pkg/sub_a)
diff --git a/tests/packages/importlib_editable/pkg/sub_a/__init__.py b/tests/packages/importlib_editable/pkg/sub_a/__init__.py
new file mode 100644
index 00000000..c7e2757d
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_a/__init__.py
@@ -0,0 +1,15 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+from .pmod_b import square as psquare
+from .emod_b import square as esquare
+
+# Level one import cousin
+from .. import sub_b
+from ..sub_b.pmod_c import square as psquare_c
+from ..sub_b.emod_c import square as esquare_c
+
+# Level one import distant cousin
+from ..sub_b import sub_c
+from ..sub_b.sub_c.pmod_d import square as psquare_d
+from ..sub_b.sub_c.emod_d import square as esquare_d
diff --git a/tests/packages/importlib_editable/pkg/sub_a/emod_b.c b/tests/packages/importlib_editable/pkg/sub_a/emod_b.c
new file mode 100644
index 00000000..51b14bb7
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_a/emod_b.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_b_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_b_module = {PyModuleDef_HEAD_INIT, "emod_b",
+                                             NULL, -1, emod_b_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod_b(void) {
+  return PyModule_Create(&emod_b_module);
+}
diff --git a/tests/packages/importlib_editable/pkg/sub_a/emod_b.pyi b/tests/packages/importlib_editable/pkg/sub_a/emod_b.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_a/emod_b.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/sub_a/pmod_b.py b/tests/packages/importlib_editable/pkg/sub_a/pmod_b.py
new file mode 100644
index 00000000..d1e1290a
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_a/pmod_b.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level two import sibling
+from .emod_b import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pkg/sub_b/CMakeLists.txt b/tests/packages/importlib_editable/pkg/sub_b/CMakeLists.txt
new file mode 100644
index 00000000..90af76b2
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/CMakeLists.txt
@@ -0,0 +1,8 @@
+python_add_library(emod_c MODULE emod_c.c WITH_SOABI)
+
+install(TARGETS emod_c DESTINATION pkg/sub_b)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/testfile" "This is the file")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/testfile" DESTINATION pkg/sub_b)
+
+add_subdirectory(sub_c)
+add_subdirectory(sub_d)
diff --git a/tests/packages/importlib_editable/pkg/sub_b/__init__.py b/tests/packages/importlib_editable/pkg/sub_b/__init__.py
new file mode 100644
index 00000000..dec028c4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/__init__.py
@@ -0,0 +1,19 @@
+# Don't let ruff sort imports in this file, we want to keep them with the comments as is
+# for clarity.
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level one pure modules
+from .pmod_c import square as psquare_c
+
+# Level one extension modules
+from .emod_c import square as esquare_c
+
+# Level one subpackages
+from . import sub_c
+
+# Level two pure modules
+from .sub_c.pmod_d import square as psquare_d
+
+# Level two extension modules
+from .sub_c.emod_d import square as esquare_d
diff --git a/tests/packages/importlib_editable/pkg/sub_b/emod_c.c b/tests/packages/importlib_editable/pkg/sub_b/emod_c.c
new file mode 100644
index 00000000..7cefd9d2
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/emod_c.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_c_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_c_module = {PyModuleDef_HEAD_INIT, "emod_c",
+                                             NULL, -1, emod_c_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod_c(void) {
+  return PyModule_Create(&emod_c_module);
+}
diff --git a/tests/packages/importlib_editable/pkg/sub_b/emod_c.pyi b/tests/packages/importlib_editable/pkg/sub_b/emod_c.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/emod_c.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/sub_b/pmod_c.py b/tests/packages/importlib_editable/pkg/sub_b/pmod_c.py
new file mode 100644
index 00000000..ca62c140
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/pmod_c.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level two import sibling
+from .emod_c import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_c/CMakeLists.txt b/tests/packages/importlib_editable/pkg/sub_b/sub_c/CMakeLists.txt
new file mode 100644
index 00000000..50bdbdd7
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_c/CMakeLists.txt
@@ -0,0 +1,6 @@
+python_add_library(emod_d MODULE emod_d.c WITH_SOABI)
+
+install(TARGETS emod_d DESTINATION pkg/sub_b/sub_c)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/testfile" "This is the file")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/testfile"
+        DESTINATION pkg/sub_b/sub_c/)
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_c/__init__.py b/tests/packages/importlib_editable/pkg/sub_b/sub_c/__init__.py
new file mode 100644
index 00000000..a60a12cc
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_c/__init__.py
@@ -0,0 +1,10 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+from .pmod_d import square as psquare_d
+from .emod_d import square as esquare_d
+
+# Level one import cousin
+from .. import sub_d
+from ..sub_d.pmod_e import square as psquare_e
+from ..sub_d.emod_e import square as esquare_e
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.c b/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.c
new file mode 100644
index 00000000..c1ca4f2e
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_d_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_d_module = {PyModuleDef_HEAD_INIT, "emod_d",
+                                             NULL, -1, emod_d_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod_d(void) {
+  return PyModule_Create(&emod_d_module);
+}
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.pyi b/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_c/emod_d.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_c/pmod_d.py b/tests/packages/importlib_editable/pkg/sub_b/sub_c/pmod_d.py
new file mode 100644
index 00000000..ea36e2de
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_c/pmod_d.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level three import sibling
+from .emod_d import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_d/CMakeLists.txt b/tests/packages/importlib_editable/pkg/sub_b/sub_d/CMakeLists.txt
new file mode 100644
index 00000000..58af95ba
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_d/CMakeLists.txt
@@ -0,0 +1,6 @@
+python_add_library(emod_e MODULE emod_e.c WITH_SOABI)
+
+install(TARGETS emod_e DESTINATION pkg/sub_b/sub_d/)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/testfile" "This is the file")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/testfile"
+        DESTINATION pkg/sub_b/sub_d/)
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_d/__init__.py b/tests/packages/importlib_editable/pkg/sub_b/sub_d/__init__.py
new file mode 100644
index 00000000..6b0f91a5
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_d/__init__.py
@@ -0,0 +1,5 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+from .pmod_e import square as psquare_e
+from .emod_e import square as esquare_e
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.c b/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.c
new file mode 100644
index 00000000..878fd1c6
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.c
@@ -0,0 +1,25 @@
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+
+float square(float x) { return x * x; }
+
+static PyObject *square_wrapper(PyObject *self, PyObject *args) {
+  float input, result;
+  if (!PyArg_ParseTuple(args, "f", &input)) {
+    return NULL;
+  }
+  result = square(input);
+  return PyFloat_FromDouble(result);
+}
+
+static PyMethodDef emod_e_methods[] = {
+    {"square", square_wrapper, METH_VARARGS, "Square function"},
+    {NULL, NULL, 0, NULL}};
+
+static struct PyModuleDef emod_e_module = {PyModuleDef_HEAD_INIT, "emod_e",
+                                             NULL, -2, emod_e_methods};
+
+/* name here must match extension name, with PyInit_ prefix */
+PyMODINIT_FUNC PyInit_emod_e(void) {
+  return PyModule_Create(&emod_e_module);
+}
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.pyi b/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.pyi
new file mode 100644
index 00000000..44914bb4
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_d/emod_e.pyi
@@ -0,0 +1 @@
+def square(x: float) -> float: ...
diff --git a/tests/packages/importlib_editable/pkg/sub_b/sub_d/pmod_e.py b/tests/packages/importlib_editable/pkg/sub_b/sub_d/pmod_e.py
new file mode 100644
index 00000000..ab44cd5d
--- /dev/null
+++ b/tests/packages/importlib_editable/pkg/sub_b/sub_d/pmod_e.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level three import sibling
+from .emod_e import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pmod.py b/tests/packages/importlib_editable/pmod.py
new file mode 100644
index 00000000..ee44ae39
--- /dev/null
+++ b/tests/packages/importlib_editable/pmod.py
@@ -0,0 +1,9 @@
+# ruff: noqa: I001, F401
+# mypy: ignore-errors
+
+# Level zero import global sibling
+from emod import square as esquare
+
+
+def square(x):
+    return x * x
diff --git a/tests/packages/importlib_editable/pyproject.toml b/tests/packages/importlib_editable/pyproject.toml
new file mode 100644
index 00000000..dae7eb5a
--- /dev/null
+++ b/tests/packages/importlib_editable/pyproject.toml
@@ -0,0 +1,10 @@
+[build-system]
+requires = ["scikit-build-core"]
+build-backend = "scikit_build_core.build"
+
+[project]
+name = "pkg"
+version = "0.0.1"
+
+[tool.scikit-build]
+build-dir = "build/{wheel_tag}"
diff --git a/tests/test_editable.py b/tests/test_editable.py
index 1d54d866..57368605 100644
--- a/tests/test_editable.py
+++ b/tests/test_editable.py
@@ -1,3 +1,4 @@
+import platform
 import sys
 import textwrap
 from pathlib import Path
@@ -156,3 +157,128 @@ def test_install_dir(isolated):
     assert "Running cmake" in out
     assert c_module.exists()
     assert not failed_c_module.exists()
+
+
+def _setup_package_for_editable_layout_tests(
+    monkeypatch, tmp_path, editable, editable_mode, isolated
+):
+    editable_flag = ["-e"] if editable else []
+
+    config_mode_flags = []
+    if editable:
+        config_mode_flags.append(f"--config-settings=editable.mode={editable_mode}")
+    if editable_mode != "inplace":
+        config_mode_flags.append("--config-settings=build-dir=build/{wheel_tag}")
+
+    # Use a context so that we only change into the directory up until the point where
+    # we run the editable install. We do not want to be in that directory when importing
+    # to avoid importing the source directory instead of the installed package.
+    with monkeypatch.context() as m:
+        package = PackageInfo("importlib_editable")
+        process_package(package, tmp_path, m)
+
+        ninja = [
+            "ninja"
+            for f in isolated.wheelhouse.iterdir()
+            if f.name.startswith("ninja-")
+        ]
+        cmake = [
+            "cmake"
+            for f in isolated.wheelhouse.iterdir()
+            if f.name.startswith("cmake-")
+        ]
+
+        isolated.install("pip>23")
+        isolated.install("scikit-build-core", *ninja, *cmake)
+
+        isolated.install(
+            "-v",
+            *config_mode_flags,
+            "--no-build-isolation",
+            *editable_flag,
+            ".",
+        )
+
+
+@pytest.mark.compile
+@pytest.mark.configure
+@pytest.mark.integration
+@pytest.mark.parametrize(
+    ("editable", "editable_mode"), [(False, ""), (True, "redirect"), (True, "inplace")]
+)
+def test_direct_import(monkeypatch, tmp_path, editable, editable_mode, isolated):
+    # TODO: Investigate these failures
+    if platform.system() == "Windows" and editable_mode == "inplace":
+        pytest.xfail("Windows fails to import the top-level extension module")
+
+    _setup_package_for_editable_layout_tests(  # type: ignore[no-untyped-call]
+        monkeypatch, tmp_path, editable, editable_mode, isolated
+    )
+    isolated.execute("import pkg")
+    isolated.execute("import pmod")
+    isolated.execute("import emod")
+
+
+@pytest.mark.compile
+@pytest.mark.configure
+@pytest.mark.integration
+@pytest.mark.parametrize(
+    ("editable", "editable_mode"),
+    [
+        (False, ""),
+        pytest.param(
+            True,
+            "redirect",
+            marks=pytest.mark.xfail,
+        ),
+        (True, "inplace"),
+    ],
+)
+def test_importlib_resources(monkeypatch, tmp_path, editable, editable_mode, isolated):
+    if sys.version_info < (3, 9):
+        pytest.skip("importlib.resources.files is introduced in Python 3.9")
+
+    # TODO: Investigate these failures
+    if editable_mode == "redirect":
+        pytest.xfail("Redirect mode is at navigating importlib.resources.files")
+    if platform.system() == "Windows" and editable_mode == "inplace":
+        pytest.xfail("Windows fails to import the top-level extension module")
+
+    _setup_package_for_editable_layout_tests(
+        monkeypatch, tmp_path, editable, editable_mode, isolated
+    )
+
+    isolated.execute(
+        textwrap.dedent(
+            """
+            from importlib import import_module
+            from importlib.resources import files
+            from pathlib import Path
+            
+            def is_extension(path):
+                for ext in (".so", ".pyd"):
+                    if ext in path.suffixes:
+                        return True
+                return False
+            
+            def check_pkg(pkg_name):
+                try:
+                    pkg = import_module(pkg_name)
+                    pkg_root = files(pkg)
+                    print(f"pkg_root: [{type(pkg_root)}] {pkg_root}")
+                    pkg_files = list(pkg_root.iterdir())
+                    for path in pkg_files:
+                        print(f"path: [{type(path)}] {path}")
+                    assert any(is_extension(path) for path in pkg_files if isinstance(path, Path))
+                except Exception as err:
+                    msg = f"Failed in {str(pkg)}"
+                    raise RuntimeError(msg) from err
+            
+            check_pkg("pkg")
+            check_pkg("pkg.sub_a")
+            check_pkg("pkg.sub_b")
+            check_pkg("pkg.sub_b.sub_c")
+            check_pkg("pkg.sub_b.sub_d")
+            """
+        )
+    )