More effective optimization: avoid introducing already implied arcs.

diff --git a/helm/software/components/ng_kernel/nCicEnvironment.ml b/helm/software/components/ng_kernel/nCicEnvironment.ml
index 8f76f4a0f25628c0947617d0144091e871cdd7e3..fa229d6f6752b5e82948af0d89f00041891c7193 100644 (file)
--- a/helm/software/components/ng_kernel/nCicEnvironment.ml
+++ b/helm/software/components/ng_kernel/nCicEnvironment.ml
@@ -43,7 +43,7 @@ let universe_eq a b = universe_leq b a || universe_leq a b
 let add_le_constraint strict a b = 
   match a,b with
   | [false,a2],[false,b2] -> 
-      if not (NUri.eq a2 b2) then (
+      if not (le_path_uri [] strict a2 b2) then (
         if le_path_uri [] (not strict) b2 a2 then
          (raise (BadConstraint (lazy "universe inconsistency")));
         le_constraints := (strict,a2,b2) :: !le_constraints)