rocklinux/package/tschmidt/graphviz/gvconfig_hotfix.patch

--- ./lib/gvc/gvconfig.c.orig	2005-08-18 11:25:03.000000000 +0200
+++ ./lib/gvc/gvconfig.c	2005-08-18 11:28:17.000000000 +0200
@@ -235,7 +235,11 @@
     gvplugin_library_t *library;
     char *plugin_glob = "libgvplugin*.so.?";
 
-    if (config_path) {
+    // this so-called "config file" should be in /var/cache, morrons!
+    // I'm going to change the config file location, so here is a little
+    // hack which skips updating the file when graphviz is called in a
+    // Build-Pkg process tree... - clifford
+    if (config_path && !getenv("ROCKCFG_ID")) {
 	f = fopen(config_path,"w");
 	if (!f) {
 	    agerr(AGERR,"failed to open %s for write.\n", config_path);