From 061470108c3f41fdf08ab362fefcb12f10bcf8ac Mon Sep 17 00:00:00 2001
From: jchopard <jerome.chopard@itk.fr>
Date: Thu, 29 Aug 2019 12:21:30 +0200
Subject: [PATCH] better error msg

---
 src/pkglts/config_management.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pkglts/config_management.py b/src/pkglts/config_management.py
index e5546efd..c86bdb2e 100644
--- a/src/pkglts/config_management.py
+++ b/src/pkglts/config_management.py
@@ -138,7 +138,7 @@ def load_extra(self):
                 for func_name, func in opt.environment_extensions(self).items():
                     setattr(self._env.globals[opt_name], func_name, func)
             except KeyError:
-                raise KeyError("option '%s' does not exists" % opt_name)
+                raise KeyError("option '%s' exists in config but does not appear to be installed" % opt_name)
 
     def installed_options(self, return_sorted=False):
         """List all installed options.