main/py3-yaml: drop py2

Closes !169

main/py3-yaml/APKBUILD

 # Contributor: Fabian Affolter <fabian@affolter-engineering.ch>
 # Contributor: Jakub Jirutka <jakub@jirutka.cz>
 # Maintainer: Fabian Affolter <fabian@affolter-engineering.ch>
-pkgname=py-yaml
+pkgname=py3-yaml
 _pkgname=PyYAML
 pkgver=5.1.2
-pkgrel=0
-pkgdesc="Python bindings for YAML"
+pkgrel=1
+pkgdesc="Python3 bindings for YAML"
 url="http://pyyaml.org"
 arch="all"
 license="MIT"
-makedepends="python2-dev python3-dev yaml-dev cython2 cython3"
-subpackages="py2-${pkgname#py-}:_py2 py3-${pkgname#py-}:_py3"
+makedepends="python3-dev yaml-dev cython3"
 source="$_pkgname-$pkgver.tar.gz::https://github.com/yaml/pyyaml/archive/$pkgver.tar.gz"
 builddir="$srcdir/pyyaml-$pkgver"
 
+replaces="py-yaml" # Backwards compatibility
+provides="py-yaml=$pkgver-r$pkgrel" # Backwards compatibility
+
 prepare() {
 	cd "$builddir"
 	default_prepare
@@ -22,36 +24,17 @@ prepare() {
 
 build() {
 	cd "$builddir"
-	python2 setup.py --with-libyaml build
 	python3 setup.py --with-libyaml build
 }
 
 check() {
 	cd "$builddir"
-	python2 setup.py test
 	python3 setup.py test
 }
 
 package() {
-	mkdir -p "$pkgdir"
-}
-
-_py2() {
-	replaces="$pkgname"
-	_py python2
-}
-
-_py3() {
-	_py python3
-}
-
-_py() {
-	local python="$1"
-	pkgdesc="$pkgdesc (for $python)"
-	install_if="$pkgname=$pkgver-r$pkgrel $python"
-
 	cd "$builddir"
-	$python setup.py install --prefix=/usr --root="$subpkgdir"
+	python3 setup.py install --prefix=/usr --root="$pkgdir"
 }
 
 sha512sums="7bc3dceadcfd512ede67581625887d00822464f20d3b646904f4a73afce8cf3b9766829c6004b626c31757edf8e2eedc27e60d96bee13afa68d3296a8a7f33bb  PyYAML-5.1.2.tar.gz"