Index: python-graphviz/PKGBUILD
===================================================================
--- python-graphviz.orig/PKGBUILD
+++ python-graphviz/PKGBUILD
@@ -39,6 +39,7 @@ check() {
 package() {
     cd "${srcdir}"/${_pkgname}-${pkgver}
 
+    export PYTHONHASHSEED=0
     python setup.py install --root="${pkgdir}" --optimize=1 --skip-build
     install -Dm644 LICENSE.txt "${pkgdir}"/usr/share/licenses/${pkgname}/LICENSE.txt
 }