testing/mutagen: fix circular dep

py-mutagen depended on itself

testing/mutagen/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=mutagen
 pkgver=1.20
-pkgrel=1
+pkgrel=2
 pkgdesc="An audio metadata tag reader and writer implemented in pure python"
 url="http://code.google.com/p/mutagen/"
 arch="noarch"
@@ -25,6 +25,7 @@ package() {
 
 py() {
 	pkgdesc="Python library for mutagen"
+	depends="python"
 	mkdir -p "$subpkgdir"/usr/lib
 	mv "$pkgdir"/usr/lib/python* "$subpkgdir"/usr/lib/
 }