From c26db8a740c7fbf5c0e79d7ff48d09839ffefd60 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Fran=C3=A7ois=20Nguyen?= <jf@lambdaconcept.com>
Date: Fri, 16 Jul 2021 19:16:56 +0200
Subject: [PATCH] _toolchain: substitute '+' with 'X' in tool_env_var().

---
 nmigen/_toolchain/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nmigen/_toolchain/__init__.py b/nmigen/_toolchain/__init__.py
index fca2bac..123c4f0 100644
--- a/nmigen/_toolchain/__init__.py
+++ b/nmigen/_toolchain/__init__.py
@@ -10,7 +10,7 @@ class ToolNotFound(Exception):
 
 
 def tool_env_var(name):
-    return name.upper().replace("-", "_")
+    return name.upper().replace("-", "_").replace("+", "X")
 
 
 def _get_tool(name):
-- 
2.30.2