Switch to setuptools-rust for building python package

maturin doesn't yet support packaging both a binary and a library into
the same package.

PyO3/maturin#368

Cargo.toml

@@ -112,6 +112,3 @@ opt-level = 1
 [[bench]]
 name = "source_code_locator"
 harness = false
-
-[package.metadata.maturin]
-name = "ruff._ruff"

pyproject.toml

@@ -17,21 +17,18 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Topic :: Software Development :: Quality Assurance",
 ]
-author = "Charlie Marsh"
-author_email = "charlie.r.marsh@gmail.com"
+authors = [
+  {name = "Charlie Marsh", email= "charlie.r.marsh@gmail.com" }
+]
 description = "An extremely fast Python linter, written in Rust."
 requires-python = ">=3.7"
+version = "0.0.195"
 
 [project.urls]
 repository = "https://github.com/charliermarsh/ruff"
 
 [build-system]
-requires = ["maturin>=0.14,<0.15"]
-build-backend = "maturin"
-
-[tool.maturin]
-bindings = "bin"
-strip = true
+requires = ["setuptools", "wheel", "setuptools-rust"]
 
 [tool.ruff]
 

setup.py

@@ -1,23 +1,13 @@
-import sys
-
 from setuptools import setup
-
-sys.stderr.write(
-    """
-===============================
-Unsupported installation method
-===============================
-ruff no longer supports installation with `python setup.py install`.
-Please use `python -m pip install .` instead.
-"""
+from setuptools_rust import Binding, RustExtension, RustBin, Strip
+
+setup(
+    name="ruff",
+    rust_extensions=[
+        RustExtension("ruff._ruff", binding=Binding.PyO3, strip=Strip.Debug),
+        RustBin("ruff", strip=Strip.Debug),
+    ],
+    packages=["ruff"],
+    # rust extensions are not zip safe, just like C-extensions.
+    zip_safe=False,
 )
-sys.exit(1)
-
-
-# The below code will never execute, however GitHub is particularly
-# picky about where it finds Python packaging metadata.
-# See: https://github.com/github/feedback/discussions/6456
-#
-# To be removed once GitHub catches up.
-
-setup(name="ruff", install_requires=[])