community/py3-importlib-metadata: re-introduce

This reverts commit dcff5dc.

This package was dropped earlier as it's functionality was integrated
into Python 3.8. However, it seems that newer versions of this package
still contains functionality not present in the Python standard library
at least until Python 3.10, and some packages (py3-keyring, py3-twine)
depend on that.

Read pypa/twine#732 (comment) for
context

community/py3-importlib-metadata/APKBUILD

@@ -0,0 +1,37 @@
+# Contributor: prspkt <prspkt@protonmail.com>
+# Maintainer: Bart Ribbers <bribbers@disroot.org>
+pkgname=py3-importlib-metadata
+pkgver=3.10.1
+pkgrel=0
+pkgdesc="Read metadata from Python packages"
+url="https://github.com/python/importlib_metadata"
+# ppc64le blocked by py3-zipp
+arch="noarch !ppc64le"
+license="Apache-2.0"
+depends="py3-zipp"
+makedepends="
+	py3-setuptools
+	py3-setuptools_scm
+	py3-toml
+	"
+checkdepends="
+	py3-pyfakefs
+	py3-pytest
+	"
+source="https://pypi.python.org/packages/source/i/importlib_metadata/importlib_metadata-$pkgver.tar.gz"
+options="!check" # Tests fail to find module "test"
+builddir="$srcdir/importlib_metadata-$pkgver"
+
+build() {
+	python3 setup.py build
+}
+
+check() {
+	pytest
+}
+
+package() {
+	python3 setup.py install --prefix=/usr --root="$pkgdir"
+}
+
+sha512sums="e028fb6abba0c7775943c346db0e733b5ba879583184c99f8413ded6314162e5dce03e10661b16392825038096fac8f6fbbea47ceac9565c60227129f3a3a48d  importlib_metadata-3.10.1.tar.gz"