From a0bddafb1e92082f464b946525d90a273806c175 Mon Sep 17 00:00:00 2001
From: Henner Zeller <h.zeller@acm.org>
Date: Sun, 4 Jun 2023 09:57:39 -0700
Subject: [PATCH] Add graphviz for the state diagram graphics.

---
 shell.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/shell.nix b/shell.nix
index 645f12e..a3a3a38 100644
--- a/shell.nix
+++ b/shell.nix
@@ -15,6 +15,7 @@ pkgs.mkShell {
       valgrind
       ghostscript
       clang-tools_11
+      graphviz
     ];
   shellHook =
   ''