diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index b3e521d7..54106395 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -15,9 +15,9 @@ jobs:
       with:
         python-version: 3.x
     - name: Install dependencies
-      run: pip install build -e .
+      run: pip install flit
     - name: Create packages
-      run: python -m build -n -s -w .
+      run: flit build --setup-py
     - name: Upload packages
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c1bca612..790a0784 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -40,9 +40,12 @@ jobs:
         path: ~/.cache/pip
         key: pip-test-${{ matrix.python-version }}-${{ matrix.os }}
     - name: Install the project
-      run: "pip install --no-binary=:all: ."
+      run: pip install --no-binary=wheel .
     - name: Install test dependencies
       run: pip install .[test] coverage[toml]
+    - name: Include SDist check dependencies
+      if: matrix.python-version == '3.11'
+      run: pip install build flit
     - name: Test with pytest
       run: |
         coverage run -m pytest -W always
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 21e13b02..22244554 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,29 +17,16 @@ repos:
   - id: requirements-txt-fixer
   - id: trailing-whitespace
 
-- repo: https://github.com/pycqa/isort
-  rev: 5.12.0
+- repo: https://github.com/charliermarsh/ruff-pre-commit
+  rev: v0.0.254
   hooks:
-  - id: isort
-    args: ["-a", "from __future__ import annotations"]
-
-- repo: https://github.com/asottile/pyupgrade
-  rev: v3.3.1
-  hooks:
-  - id: pyupgrade
-    args: ["--py37-plus"]
+    - id: ruff
+      args: [--fix, --show-fixes]
 
 - repo: https://github.com/psf/black
   rev: 23.1.0
   hooks:
   - id: black
-    args: [--target-version=py37]
-
-- repo: https://github.com/PyCQA/flake8
-  rev: 6.0.0
-  hooks:
-  - id: flake8
-    additional_dependencies: [flake8-bugbear]
 
 - repo: https://github.com/codespell-project/codespell
   rev: v2.2.2
@@ -49,10 +36,6 @@ repos:
 - repo: https://github.com/pre-commit/pygrep-hooks
   rev: v1.10.0
   hooks:
-  - id: python-check-blanket-noqa
-  - id: python-check-blanket-type-ignore
-  - id: python-no-eval
-  - id: python-use-type-annotations
   - id: rst-backticks
   - id: rst-directive-colons
   - id: rst-inline-touching-normal
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index d5d5b3e2..00000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,11 +0,0 @@
-recursive-include src *.py
-recursive-include tests *.py *.h *.txt *.c *.dylib
-recursive-include docs *.py *.rst make.bat Makefile
-include tests/testdata/test-1.0-py2.py3-none-any.whl
-include tox.ini
-include manpages/*.rst
-include LICENSE.txt
-include src/wheel/vendored/vendor.txt
-prune tests/testdata/*/build
-prune tests/testdata/*/dist
-prune tests/testdata/*/*.egg-info
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..13715634
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,131 @@
+[build-system]
+requires = ["flit_core >=3.8,<4"]
+build-backend = "flit_core.buildapi"
+
+[project]
+name = "wheel"
+description = "A built-package format for Python"
+readme = "README.rst"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Topic :: System :: Archiving :: Packaging",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+]
+authors = [{name = "Daniel Holth", email = "dholth@fastmail.fm"}]
+maintainers = [{name = "Alex Grönholm", email = "alex.gronholm@nextday.fi"}]
+keywords = ["wheel", "packaging"]
+license = {file = "LICENSE.txt"}
+requires-python = ">=3.7"
+dynamic = ["version"]
+
+[project.urls]
+Documentation = "https://wheel.readthedocs.io/"
+Changelog = "https://wheel.readthedocs.io/en/stable/news.html"
+"Issue Tracker" = "https://github.com/pypa/wheel/issues"
+
+[project.scripts]
+wheel = "wheel.cli:main"
+
+[project.entry-points."distutils.commands"]
+bdist_wheel = "wheel.bdist_wheel:bdist_wheel"
+
+[project.optional-dependencies]
+test = [
+    "pytest >= 6.0.0"
+]
+
+[tool.flit.sdist]
+include = [
+    "LICENSE*",
+    "docs/**/*.py",
+    "docs/**/*.rst",
+    "docs/Makefile",
+    "docs/make.bat",
+    "manpages/*.rst",
+    "tests/**/*.py",
+    "tests/**/*.txt",
+    "tests/**/*.c",
+    "tests/**/*.h",
+    "tests/**/*.cfg",
+    "tests/testdata/macosx_minimal_system_version/*.dylib",
+    "tests/testdata/test-1.0-py2.py3-none-any.whl",
+]
+exclude = [
+    ".cirrus.yml",
+    ".github/**",
+    ".gitignore",
+    ".pre-commit-config.yaml",
+    ".readthedocs.yml",
+    "**/__pycache__",
+]
+
+[tool.black]
+target-version = ['py37']
+extend-exclude = '''
+^/src/wheel/vendored/
+'''
+
+[tool.pytest.ini_options]
+testpaths = "tests"
+
+[tool.coverage.run]
+source = ["wheel"]
+omit = ["*/vendored/*"]
+
+[tool.coverage.report]
+show_missing = true
+
+[tool.ruff]
+line-length = 88
+select = [
+    "E", "F", "W",  # default flake-8
+    "I",            # isort
+    "PGH",          # pygrep-hooks
+    "UP",           # pyupgrade
+    "B0",           # flake8-bugbear
+]
+ignore = [
+    "E501",  # Line too long
+]
+target-version = "py37"
+src = ["src"]
+
+[tool.tox]
+legacy_tox_ini = '''
+# Tox (http://tox.testrun.org/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+envlist = py37, py38, py39, py310, py311, pypy3, lint, pkg
+minversion = 4.0.0
+skip_missing_interpreters = true
+
+[testenv]
+depends = lint
+commands = {envpython} -b -m pytest -W always {posargs}
+extras = test
+
+[testenv:lint]
+depends =
+basepython = python3
+deps = pre-commit
+commands = pre-commit run --all-files --show-diff-on-failure
+skip_install = true
+
+[testenv:pkg]
+basepython = python3
+deps =
+    build
+    flit>=3.8
+commands = {envpython} -b -m pytest tests/test_sdist.py {posargs}
+'''
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index e6a9d5a3..00000000
--- a/setup.cfg
+++ /dev/null
@@ -1,67 +0,0 @@
-[metadata]
-name = wheel
-version = attr: wheel.__version__
-description = A built-package format for Python
-long_description = file: README.rst
-classifiers =
-    Development Status :: 5 - Production/Stable
-    Intended Audience :: Developers
-    Topic :: System :: Archiving :: Packaging
-    License :: OSI Approved :: MIT License
-    Programming Language :: Python
-    Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: 3.10
-    Programming Language :: Python :: 3.11
-author = Daniel Holth
-author_email = dholth@fastmail.fm
-maintainer = Alex Grönholm
-maintainer_email = alex.gronholm@nextday.fi
-url = https://github.com/pypa/wheel
-project_urls =
-    Documentation = https://wheel.readthedocs.io/
-    Changelog = https://wheel.readthedocs.io/en/stable/news.html
-    Issue Tracker = https://github.com/pypa/wheel/issues
-keywords = wheel, packaging
-license = MIT
-
-[options]
-package_dir=
-    = src
-packages = find:
-python_requires = >=3.7
-zip_safe = False
-
-[options.packages.find]
-where = src
-
-[options.extras_require]
-test =
-    pytest >= 3.0.0
-
-[options.entry_points]
-console_scripts =
-    wheel = wheel.cli:main
-distutils.commands =
-    bdist_wheel = wheel.bdist_wheel:bdist_wheel
-
-[tool:isort]
-src_paths = src
-profile = black
-skip_gitignore = true
-
-[flake8]
-max-line-length = 88
-extend-ignore = B028
-
-[tool:pytest]
-testpaths = tests
-
-[coverage:run]
-source = wheel
-omit = */vendored/*
-
-[coverage:report]
-show_missing = true
diff --git a/setup.py b/setup.py
deleted file mode 100644
index a03590f5..00000000
--- a/setup.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from __future__ import annotations
-
-from setuptools import setup
-
-setup()
diff --git a/tests/test_sdist.py b/tests/test_sdist.py
new file mode 100644
index 00000000..413e3207
--- /dev/null
+++ b/tests/test_sdist.py
@@ -0,0 +1,47 @@
+import subprocess
+import sys
+import tarfile
+from pathlib import Path
+
+import pytest
+
+pytest.importorskip("flit")
+pytest.importorskip("build")
+
+# This test must be run from the source directory - okay to skip if not
+DIR = Path(__file__).parent.resolve()
+MAIN_DIR = DIR.parent
+
+
+def test_compare_sdists(monkeypatch, tmp_path):
+    monkeypatch.chdir(MAIN_DIR)
+
+    sdist_build_dir = tmp_path / "bdir"
+
+    subprocess.run(
+        [
+            sys.executable,
+            "-m",
+            "build",
+            "--sdist",
+            "--no-isolation",
+            f"--outdir={sdist_build_dir}",
+        ],
+        check=True,
+    )
+
+    (sdist_build,) = sdist_build_dir.glob("*.tar.gz")
+
+    # Flit doesn't allow targeting directories, as far as I can tell
+    subprocess.run(
+        [sys.executable, "-m", "flit", "build", "--format=sdist"], check=True
+    )
+
+    (sdist_flit,) = Path("dist").glob("*.tar.gz")
+
+    out = [set(), set()]
+    for i, sdist in enumerate([sdist_build, sdist_flit]):
+        with tarfile.open(str(sdist), "r:gz") as tar:
+            out[i] = set(tar.getnames())
+
+    assert out[0] == (out[1] - {"setup.py"})
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index 1d170e60..00000000
--- a/tox.ini
+++ /dev/null
@@ -1,21 +0,0 @@
-# Tox (http://tox.testrun.org/) is a tool for running tests
-# in multiple virtualenvs. This configuration file will run the
-# test suite on all supported python versions. To use it, "pip install tox"
-# and then run "tox" from this directory.
-
-[tox]
-envlist = py37, py38, py39, py310, py311, pypy3, lint
-minversion = 3.3.0
-skip_missing_interpreters = true
-
-[testenv]
-depends = lint
-commands = {envpython} -b -m pytest -W always {posargs}
-extras = test
-
-[testenv:lint]
-depends =
-basepython = python3
-deps = pre-commit
-commands = pre-commit run --all-files --show-diff-on-failure
-skip_install = true