taken from:
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/ghostscript918.patch?h=packages/graphviz
Summary(pl.UTF-8): Narzędzie do wizualizacji w postaci grafów
Name: graphviz
Version: 2.38.0
-Release: 17
+Release: 18
License: CPL v1.0
Group: X11/Applications/Graphics
Source0: http://www.graphviz.org/pub/graphviz/ARCHIVE/%{name}-%{version}.tar.gz
Patch12: %{name}-webp.patch
Patch13: %{name}-format.patch
Patch14: python-paths.patch
+Patch15: ghostscript918.patch
URL: http://www.graphviz.org/
%{?with_devil:BuildRequires: DevIL-devel}
%{?with_r:BuildRequires: R}
%patch12 -p1
%patch13 -p1
%patch14 -p1
+%patch15 -p1
%{__sed} '1s@/usr/bin/lua$@/usr/bin/lua5.1@' -i tclpkg/gv/demo/modgraph.lua