diff --git a/pyproject.toml b/pyproject.toml
index b4706845..483f9dd1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,8 +1,32 @@
 [tool.ruff]
+target-version = "py311"
 line-length = 88
+select = ["ALL"]
+ignore = [
+  # pydocstyle
+  "D",
+  # Missing type annotation for `self` in method
+  "ANN101",
+  # Trailing comma missing
+  "COM812",
+  # Unnecessary `dict` call (rewrite as a literal)
+  "C408",
+  # Boolean-typed positional argument in function definition
+  "FBT001",
+  # Logging statement uses f-string
+  "G004",
+  # disabled on ruff's recommendation as causes problems with the formatter
+  "ISC001",
+  # Use of `assert` detected
+  "S101",
+  # `subprocess` call: check for execution of untrusted input
+  "S603",
 
-select = ["E", "F", "I"]
-ignore = [ "E501" ]
+  # FIXME? Maybe we should enable these?
+  "PLR0913", # Too many arguments in function definition (7 > 5)
+  "PLR2004", # Magic value used in comparison, consider replacing 4 with a constant variable
+  "FBT002",  # Boolean default positional argument in function definition
+]
 
 [tool.mypy]
 python_version = "3.10"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 1294fa55..00000000
--- a/setup.cfg
+++ /dev/null
@@ -1,23 +0,0 @@
-[wheel]
-universal = 1
-
-[pycodestyle]
-max-line-length = 88
-ignore = E501,E741,W503
-
-[flake8]
-max-line-length = 88
-ignore = E501,E741,W503
-exclude = .git,__pycache__,docs/source/conf.py,old,build,dist
-
-[mypy]
-warn_redundant_casts = true
-disallow_untyped_calls = true
-disallow_untyped_defs = true
-no_implicit_optional = true
-
-[mypy-pytest.*]
-ignore_missing_imports = True
-
-[isort]
-profile = black
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/conftest.py b/tests/conftest.py
index 8a849bf1..1f74975b 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,4 @@
 pytest_plugins = [
-    "direnv_project",
-    "root",
+    "tests.direnv_project",
+    "tests.root",
 ]
diff --git a/tests/direnv_project.py b/tests/direnv_project.py
index ebca0172..f2166fef 100644
--- a/tests/direnv_project.py
+++ b/tests/direnv_project.py
@@ -1,22 +1,23 @@
 import shutil
 import textwrap
+from collections.abc import Iterator
 from dataclasses import dataclass
 from pathlib import Path
 from tempfile import TemporaryDirectory
-from typing import Iterator
 
 import pytest
-from procs import run
+
+from .procs import run
 
 
 @dataclass
 class DirenvProject:
-    dir: Path
+    directory: Path
     nix_direnv: Path
 
     @property
     def envrc(self) -> Path:
-        return self.dir / ".envrc"
+        return self.directory / ".envrc"
 
     def setup_envrc(self, content: str, strict_env: bool) -> None:
         text = textwrap.dedent(
@@ -27,23 +28,23 @@ def setup_envrc(self, content: str, strict_env: bool) -> None:
         """
         )
         self.envrc.write_text(text)
-        run(["direnv", "allow"], cwd=self.dir)
+        run(["direnv", "allow"], cwd=self.directory)
 
 
-@pytest.fixture
+@pytest.fixture()
 def direnv_project(test_root: Path, project_root: Path) -> Iterator[DirenvProject]:
     """
     Setups a direnv test project
     """
     with TemporaryDirectory() as _dir:
-        dir = Path(_dir) / "proj"
-        shutil.copytree(test_root / "testenv", dir)
-        shutil.copyfile(project_root / "flake.nix", dir / "flake.nix")
-        shutil.copyfile(project_root / "flake.lock", dir / "flake.lock")
-        shutil.copyfile(project_root / "treefmt.nix", dir / "treefmt.nix")
+        directory = Path(_dir) / "proj"
+        shutil.copytree(test_root / "testenv", directory)
+        shutil.copyfile(project_root / "flake.nix", directory / "flake.nix")
+        shutil.copyfile(project_root / "flake.lock", directory / "flake.lock")
+        shutil.copyfile(project_root / "treefmt.nix", directory / "treefmt.nix")
         nix_direnv = project_root / "direnvrc"
 
-        c = DirenvProject(Path(dir), nix_direnv)
+        c = DirenvProject(Path(directory), nix_direnv)
         try:
             yield c
         finally:
diff --git a/tests/procs.py b/tests/procs.py
index ea837d4e..f9d80bab 100644
--- a/tests/procs.py
+++ b/tests/procs.py
@@ -1,23 +1,27 @@
+import logging
+import shlex
 import subprocess
 from pathlib import Path
-from typing import IO, Any, List, Optional, Union
+from typing import IO, Any
 
-_FILE = Union[None, int, IO[Any]]
-_DIR = Union[None, Path, str]
+_FILE = None | int | IO[Any]
+_DIR = None | Path | str
+
+log = logging.getLogger(__name__)
 
 
 def run(
-    cmd: List[str],
+    cmd: list[str],
     text: bool = True,
     check: bool = True,
     cwd: _DIR = None,
     stderr: _FILE = None,
     stdout: _FILE = None,
-    env: Optional[dict[str, str]] = None,
+    env: dict[str, str] | None = None,
 ) -> subprocess.CompletedProcess:
     if cwd is not None:
-        print(f"cd {cwd}")
-    print("$ " + " ".join(cmd))
+        log.debug(f"cd {cwd}")
+    log.debug(f"$ {shlex.join(cmd)}")
     return subprocess.run(
         cmd, text=text, check=check, cwd=cwd, stderr=stderr, stdout=stdout, env=env
     )
diff --git a/tests/root.py b/tests/root.py
index b3f0914d..a5bf3994 100644
--- a/tests/root.py
+++ b/tests/root.py
@@ -6,7 +6,7 @@
 PROJECT_ROOT = TEST_ROOT.parent
 
 
-@pytest.fixture
+@pytest.fixture()
 def test_root() -> Path:
     """
     Root directory of the tests
@@ -14,7 +14,7 @@ def test_root() -> Path:
     return TEST_ROOT
 
 
-@pytest.fixture
+@pytest.fixture()
 def project_root() -> Path:
     """
     Root directory of the tests
diff --git a/tests/test_gc.py b/tests/test_gc.py
index e46fcfd8..26f25663 100644
--- a/tests/test_gc.py
+++ b/tests/test_gc.py
@@ -1,22 +1,26 @@
+import logging
 import subprocess
 import sys
 import unittest
 
 import pytest
-from direnv_project import DirenvProject
-from procs import run
+
+from .direnv_project import DirenvProject
+from .procs import run
+
+log = logging.getLogger(__name__)
 
 
 def common_test(direnv_project: DirenvProject) -> None:
     run(["nix-collect-garbage"])
 
-    testenv = str(direnv_project.dir)
+    testenv = str(direnv_project.directory)
 
     out1 = run(
         ["direnv", "exec", testenv, "hello"],
         stderr=subprocess.PIPE,
         check=False,
-        cwd=direnv_project.dir,
+        cwd=direnv_project.directory,
     )
     sys.stderr.write(out1.stderr)
     assert out1.returncode == 0
@@ -29,7 +33,7 @@ def common_test(direnv_project: DirenvProject) -> None:
         ["direnv", "exec", testenv, "hello"],
         stderr=subprocess.PIPE,
         check=False,
-        cwd=direnv_project.dir,
+        cwd=direnv_project.directory,
     )
     sys.stderr.write(out2.stderr)
     assert out2.returncode == 0
@@ -38,23 +42,25 @@ def common_test(direnv_project: DirenvProject) -> None:
 
 
 def common_test_clean(direnv_project: DirenvProject) -> None:
-    testenv = str(direnv_project.dir)
+    testenv = str(direnv_project.directory)
 
     out3 = run(
         ["direnv", "exec", testenv, "hello"],
         stderr=subprocess.PIPE,
         check=False,
-        cwd=direnv_project.dir,
+        cwd=direnv_project.directory,
     )
     sys.stderr.write(out3.stderr)
 
     files = [
-        path for path in (direnv_project.dir / ".direnv").iterdir() if path.is_file()
+        path
+        for path in (direnv_project.directory / ".direnv").iterdir()
+        if path.is_file()
     ]
     rcs = [f for f in files if f.match("*.rc")]
     profiles = [f for f in files if not f.match("*.rc")]
     if len(rcs) != 1 or len(profiles) != 1:
-        print(files)
+        log.debug(files)
     assert len(rcs) == 1
     assert len(profiles) == 1
 
@@ -75,11 +81,11 @@ def test_use_nix(direnv_project: DirenvProject, strict_env: bool) -> None:
 def test_use_flake(direnv_project: DirenvProject, strict_env: bool) -> None:
     direnv_project.setup_envrc("use flake", strict_env=strict_env)
     common_test(direnv_project)
-    inputs = list((direnv_project.dir / ".direnv/flake-inputs").iterdir())
+    inputs = list((direnv_project.directory / ".direnv/flake-inputs").iterdir())
     # should only contain our flake-utils flake
     if len(inputs) != 4:
-        run(["nix", "flake", "archive", "--json"], cwd=direnv_project.dir)
-        print(inputs)
+        run(["nix", "flake", "archive", "--json"], cwd=direnv_project.directory)
+        log.debug(inputs)
     assert len(inputs) == 4
     for symlink in inputs:
         assert symlink.is_dir()
diff --git a/tests/test_use_nix.py b/tests/test_use_nix.py
index 0c79fa53..804079de 100644
--- a/tests/test_use_nix.py
+++ b/tests/test_use_nix.py
@@ -1,31 +1,35 @@
+import logging
 import os
+import shlex
 import subprocess
 import sys
 import unittest
-from typing import Optional
 
 import pytest
-from direnv_project import DirenvProject
-from procs import run
+
+from .direnv_project import DirenvProject
+from .procs import run
+
+log = logging.getLogger(__name__)
 
 
 def direnv_exec(
-    direnv_project: DirenvProject, cmd: str, env: Optional[dict[str, str]] = None
+    direnv_project: DirenvProject, cmd: str, env: dict[str, str] | None = None
 ) -> None:
-    args = ["direnv", "exec", str(direnv_project.dir), "sh", "-c", cmd]
-    print("$ " + " ".join(args))
+    args = ["direnv", "exec", str(direnv_project.directory), "sh", "-c", cmd]
+    log.debug(f"$ {shlex.join(args)}")
     out = run(
         args,
         stderr=subprocess.PIPE,
         stdout=subprocess.PIPE,
         check=False,
-        cwd=direnv_project.dir,
+        cwd=direnv_project.directory,
         env=env,
     )
     sys.stdout.write(out.stdout)
     sys.stderr.write(out.stderr)
     assert out.returncode == 0
-    assert "OK\n" == out.stdout
+    assert out.stdout == "OK\n"
     assert "renewed cache" in out.stderr
 
 
@@ -57,7 +61,7 @@ def test_no_files(direnv_project: DirenvProject, strict_env: bool) -> None:
         stderr=subprocess.PIPE,
         stdout=subprocess.PIPE,
         check=False,
-        cwd=direnv_project.dir,
+        cwd=direnv_project.directory,
     )
     assert out.returncode == 0
     assert 'Loaded watch: "."' not in out.stdout