cl-adams/adams

diff --git a/core/os.lisp b/core/os.lisp
index e1cc9fa..df27ed5 100644
--- a/core/os.lisp
+++ b/core/os.lisp
@@ -45,6 +45,7 @@
             :accessor os-distrib
             :type symbol)))
 (defclass os-linux-debian (os-linux) ())
+(defclass os-linux-gentoo (os-linux) ())
 
 ;;  BSD