community/py-lz4: force use of system lz4

also run tests for python3 instead of python2

community/py-lz4/APKBUILD

@@ -3,7 +3,7 @@
 pkgname=py-lz4
 pkgver=0.17.0
 _pkgname=${pkgname#py-}
-pkgrel=0
+pkgrel=1
 pkgdesc="LZ4 Bindings for Python"
 url="https://pypi.python.org/pypi/lz4"
 arch="all"
@@ -16,9 +16,14 @@ if [ "$CARCH" = "s390x" ]; then
 	options="!check"
 fi
 subpackages="py3-${pkgname/py-/}:_py3 py2-${pkgname/py-/}:_py2 $pkgname-tests:_tests:noarch"
-source="https://files.pythonhosted.org/packages/source/${_pkgname:0:1}/$_pkgname/$_pkgname-$pkgver.tar.gz"
+source="https://files.pythonhosted.org/packages/source/${_pkgname:0:1}/$_pkgname/$_pkgname-$pkgver.tar.gz
+	system-lz4.patch"
 builddir="$srcdir/$_pkgname-$pkgver"
 
+prepare() {
+	default_prepare
+	rm lz4libs/lz4*.[ch]
+}
 build() {
 	cd "$builddir"
 	python2 setup.py build
@@ -27,7 +32,7 @@ build() {
 
 check() {
 	cd "$builddir"
-	python2 setup.py test
+	python3 setup.py test
 }
 
 package() {
@@ -60,4 +65,5 @@ _tests() {
 	mv "$builddir"/tests "$subpkgdir"/usr/share/$pkgname
 }
 
-sha512sums="29af6839733cd57ee607e7e608a1aa2ab8c99aeb494b415af35ecad4efe26b1809a56a35dce045f1425043ebc9313fd99dcc81a1ac6d572b52d6debd14451207  lz4-0.17.0.tar.gz"
+sha512sums="29af6839733cd57ee607e7e608a1aa2ab8c99aeb494b415af35ecad4efe26b1809a56a35dce045f1425043ebc9313fd99dcc81a1ac6d572b52d6debd14451207  lz4-0.17.0.tar.gz
+bfd746ae77169f4b963a386816f8480f817587535415144f3a716a00ad22f18db3dfde5b2bbe69892d2298e19453a88531eec90b72fca13961f404555de41b8b  system-lz4.patch"

community/py-lz4/system-lz4.patch

@@ -0,0 +1,27 @@
+diff --git a/setup.py b/setup.py
+index 19b50f0..9302e4d 100644
+--- a/setup.py
++++ b/setup.py
+@@ -50,6 +50,8 @@ lz4frame_sources = [
+     'lz4/frame/_frame.c'
+ ]
+ 
++liblz4_found = True
++
+ if liblz4_found is True:
+     libraries.append('lz4')
+ else:
+@@ -86,9 +88,10 @@ if compiler == 'msvc':
+     extra_compile_args = ['/Ot', '/Wall']
+ elif compiler in ('unix', 'mingw32'):
+     if liblz4_found:
+-        extra_link_args.append(pkgconfig.libs('liblz4'))
+-        if pkgconfig.cflags('liblz4'):
+-            extra_compile_args.append(pkgconfig.cflags('liblz4'))
++       extra_link_args.append('-llz4')
++#       extra_link_args.append(pkgconfig.libs('liblz4'))
++#        if pkgconfig.cflags('liblz4'):
++#            extra_compile_args.append(pkgconfig.cflags('liblz4'))
+     else:
+         extra_compile_args = [
+             '-O3',