Add pyproject.toml file

.github/workflows/release.yml

@@ -27,11 +27,15 @@ jobs:
         run: |
           python -m pip install -U pip
           python -m pip install -U setuptools twine wheel
+          # pip-tools can be built using `build` with the new pyproject.toml file
+          # python -m pip install -U twine build # setuptools and wheel are installed by build
 
       - name: Build package
         run: |
           python setup.py --version
           python setup.py sdist --format=gztar bdist_wheel
+          # pip-tools can be built using `build` with the new pyproject.toml file
+          # python -m build
           twine check dist/*
 
       - name: Upload packages to Jazzband

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system] # allows user to build pip-tools using pyproject-build or python -m build
+requires = ["setuptools>=45", "setuptools_scm[toml]>=6.2", "wheel"]
+build-backend = "setuptools.build_meta"