better pps

[helm.git] / helm / software / components / ng_kernel / nCicEnvironment.ml

diff --git a/helm/software/components/ng_kernel/nCicEnvironment.ml b/helm/software/components/ng_kernel/nCicEnvironment.ml
index 9cad0554cea2381845aaf63a654e008507481dbb..f31c4e9b1ebbc71416ced0dbbc120e4bf60c7448 100644 (file)
--- a/helm/software/components/ng_kernel/nCicEnvironment.ml
+++ b/helm/software/components/ng_kernel/nCicEnvironment.ml
@@ -16,7 +16,7 @@ module Ref = NReference
 
 exception CircularDependency of string Lazy.t;;
 exception ObjectNotFound of string Lazy.t;;
-exception BadDependency of string Lazy.t;;
+exception BadDependency of string Lazy.t * exn;;
 exception BadConstraint of string Lazy.t;;
 
 let type0 = []
@@ -140,11 +140,12 @@ let get_checked_obj u =
         Sys.Break as e ->
          frozen_list := saved_frozen_list;
          raise e
-      | Propagate (u',_) as e' ->
+      | Propagate (u',old_exn) as e' ->
          frozen_list := saved_frozen_list;
          let exn = `Exn (BadDependency (lazy (NUri.string_of_uri u ^
            " depends (recursively) on " ^ NUri.string_of_uri u' ^
-           " which is not well-typed"))) in
+           " which is not well-typed"), 
+           match old_exn with BadDependency (_,e) -> e | _ -> old_exn)) in
          NUri.UriHash.add cache u exn;
          if saved_frozen_list = [] then
           exn