Add python-tomli

install via the wheel since it will be part of the bootstrap chain
like the mingw package and we can't use any build tools there.

Required for newer pytest

python-tomli/PKGBUILD

@@ -0,0 +1,28 @@
+pkgname=python-tomli
+pkgver=2.0.1
+pkgrel=1
+pkgdesc="A lil' TOML parser"
+url="https://github.com/hukkin/tomli"
+license=('spdx:MIT')
+arch=('any')
+depends=('python')
+source=("https://pypi.debian.net/tomli/tomli-$pkgver-py3-none-any.whl"
+        "install_wheel.py")
+sha256sums=('939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc'
+            '668e64f912d6360330c403edb6100b21f6aa6dd6a7803d342fab8c35d8176ad9')
+
+build() {
+  mkdir dist
+  cp "tomli-$pkgver-py3-none-any.whl" dist
+}
+
+package() {
+  _pythonpath=`python -c "import sysconfig; print(sysconfig.get_path('platlib'))"`
+  _site_packages="${pkgdir}${_pythonpath}"
+  mkdir -p "$_site_packages"
+  python "${srcdir}/install_wheel.py" -i"${_site_packages}" dist/*.whl
+  python -m compileall \
+    -o 0 -o 1 -q -s"${pkgdir}" -p"/" "${_site_packages}"
+
+  install -Dm644 tomli*.dist-info/LICENSE -t "$pkgdir"/usr/share/licenses/$pkgname/
+}

python-tomli/install_wheel.py

@@ -0,0 +1,33 @@
+import argparse
+import sys
+import sysconfig
+from pathlib import Path
+from zipfile import ZipFile
+
+def extract_wheel(whl_path, dest):
+    print("Installing to", dest)
+    with ZipFile(whl_path) as zf:
+        zf.extractall(dest)
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        'wheel',
+        type=Path,
+        help=f'wheel to install (.whl file)',
+    )
+    purelib = Path(sysconfig.get_path('purelib')).resolve()
+    parser.add_argument(
+        '--installdir',
+        '-i',
+        type=Path,
+        default=purelib,
+        help=f'installdir directory (defaults to {purelib})',
+    )
+
+    args = parser.parse_args()
+
+    if not args.installdir.is_dir():
+        sys.exit(f"{args.installdir} is not a directory")
+
+    extract_wheel(args.wheel, args.installdir)