Change the toplevel representation of Ltac values to an untyped one.

This brings the evaluation model of Ltac closer to those of usual languages, and
further allows the integration of static typing in the long run. More precisely,
toplevel constructed values such as lists and the like do not carry anymore the
type of the underlying data they contain.

This is mostly an API change, as it did not break any contrib outside of mathcomp.

1 files changed, 7 insertions, 1 deletions

diff --git a/interp/stdarg.ml b/interp/stdarg.ml
index 244cdd0a70..2a7d52e3af 100644
--- a/interp/stdarg.ml
+++ b/interp/stdarg.ml
@@ -7,6 +7,12 @@
 (************************************************************************)
 
 open Genarg
+open Geninterp
+
+let make0 ?dyn name =
+  let wit = Genarg.make0 name in
+  let () = register_val0 wit dyn in
+  wit
 
 let wit_unit : unit uniform_genarg_type =
   make0 "unit"
@@ -21,7 +27,7 @@ let wit_string : string uniform_genarg_type =
   make0 "string"
 
 let wit_pre_ident : string uniform_genarg_type =
-  make0 "preident"
+  make0 ~dyn:(val_tag (topwit wit_string)) "preident"
 
 (** Aliases for compatibility *)