migrate setup.py to pyproject.toml

.github/workflows/pythontest.yml

@@ -33,8 +33,7 @@ jobs:
         if: "matrix.os == 'macos-latest'"
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade ".[fastimport,paramiko,https]"  setuptools-rust
+          pip install --upgrade ".[fastimport,paramiko,https]" build
       - name: Install gpg on supported platforms
         run: pip install --upgrade ".[pgp]"
         if: "matrix.os != 'windows-latest' && matrix.python-version != 'pypy3'"
@@ -50,7 +49,7 @@ jobs:
         if: "matrix.python-version != 'pypy3'"
       - name: Build
         run: |
-          python setup.py build_ext -i
+          python -m build
         env:
           RUSTFLAGS: "-D warnings"
       - name: codespell

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=61.2"]
+requires = ["setuptools>=61.2", "setuptools-rust"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -35,6 +35,21 @@ Repository = "https://www.dulwich.io/code/"
 GitHub = "https://github.com/dulwich/dulwich"
 "Bug Tracker" = "https://github.com/dulwich/dulwich/issues"
 
+[[tool.setuptools-rust.ext-modules]]
+target = "dulwich._objects"
+path = "crates/objects/Cargo.toml"
+optional = true
+
+[[tool.setuptools-rust.ext-modules]]
+target = "dulwich._pack"
+path = "crates/pack/Cargo.toml"
+optional = true
+
+[[tool.setuptools-rust.ext-modules]]
+target = "dulwich._diff_tree"
+path = "crates/diff-tree/Cargo.toml"
+optional = true
+
 [project.optional-dependencies]
 fastimport = ["fastimport"]
 https = ["urllib3>=1.24.1"]