Replace versioneer with setuptools-scm, migrate to pyproject.toml.

Versioneer has been completely removed.
Now `_version.py` is generated during setup, but I've tweaked the script
so that the package can run even without it.

Setup metadata has been moved into pyproject.toml as well.

.flake8

@@ -4,4 +4,4 @@ per-file-ignores =
     delocate/tmpdirs.py: E266
 select = E,F,W
 ignore = W503,W504,E203
-exclude = versioneer.py delocate/_version.py
+exclude = delocate/_version.py

.github/workflows/pypi-deploy.yml

@@ -9,17 +9,17 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      # checkout@v1 is required since versioneer uses git describe.
+      # checkout@v1 is used to that tags are more relaible.
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v4
         with:
           python-version: "3.x"
       - name: Install deployment dependencies
         run: |
-          pip install wheel twine
+          pip install twine build
       - name: Build distribution
         run: |
-          python setup.py sdist bdist_wheel
+          python -m build
       - name: Upload to PyPI
         env:
           TWINE_USERNAME: __token__

.github/workflows/python-package.yml

@@ -39,7 +39,7 @@ jobs:
       - name: Install Delocate dependencies.
         run: |
           pip install pytest
-          python setup.py develop
+          pip install -e .
       - name: MyPy
         uses: liskin/gh-problem-matcher-wrap@v2
         with:
@@ -99,10 +99,13 @@ jobs:
           if-no-files-found: error
       - name: Install test dependencies
         run: |
-          pip install -r test-requirements.txt
+          pip install -r test-requirements.txt build
+      - name: Build delocate
+        run: |
+          python -m build
       - name: Install delocate
         run: |
-          python setup.py develop bdist_wheel
+          pip install -e .
       - name: Upload wheel
         uses: actions/upload-artifact@v3
         with:

.gitignore

@@ -4,4 +4,5 @@ dist/
 MANIFEST
 .coverage
 delocate*info/
-.cache
+.cache
+_version.py

.mypy.ini

@@ -11,3 +11,4 @@ follow_imports = skip
 [mypy-delocate._version]
 # Ignore delocate._version module.
 ignore_errors = True
+ignore_missing_imports = True

MANIFEST.in

@@ -1,5 +1,3 @@
-include versioneer.py
-include setup.cfg
 include delocate/_version.py
 include LICENSE
 include README.rst

delocate/__init__.py

@@ -1,11 +1,12 @@
 # Init for delocate package
 
-from . import _version
 from .delocating import delocate_path, delocate_wheel, patch_wheel
 from .libsana import tree_libs, wheel_libs
 
-__version__ = _version.get_versions()["version"]
-del _version
+try:
+    from ._version import __version__
+except ImportError:
+    __version__ = "0.0.0"
 
 __all__ = (
     "delocate_path",