--- PKGBUILD.org	2008-04-06 05:17:45.000000000 -0700
+++ PKGBUILD	2008-04-06 05:17:59.000000000 -0700
@@ -12,7 +12,7 @@
 
 build() {
   cd $startdir/src/$pkgname-$pkgver
-  python setup.py install --prefix=/usr --root=$startdir/pkg
+  python setup.py install --prefix=/usr --root=$startdir/pkg || return 1
 
   # bash-completion
   install -D -m644 contrib/bash/bzr \