--- PKGBUILD.orig	2014-09-09 23:22:09.327802098 +0200
+++ PKGBUILD	2014-09-09 23:25:22.737791041 +0200
@@ -14,6 +14,10 @@
 source=("http://downloads.sourceforge.net/${pkgname}/${pkgname}-${pkgver}.tar.xz")
 md5sums=('b2b22d8480bfb79822217fefbe778170')
 
+prepare() {
+  sed -i -e 's/MODE="660"/MODE="0666"/g' "$srcdir/$pkgname-$pkgver/host/libhackrf/53-hackrf.rules"
+}
+
 build() {
   cd "$srcdir/$pkgname-$pkgver/host"
   mkdir -p build