[econstr] Continue consolidation of EConstr API under `interp`.

This commit was motivated by true spurious conversions arising in my
`to_constr` debug branch.

The changes here need careful review as the tradeoffs are subtle and
still a lot of clean up remains to be done in `vernac/*`.

We have opted for penalize [minimally] the few users coming from true
`Constr`-land, but I am sure we can tweak code in a much better way.

In particular, it is not clear if internalization should take an
`evar_map` even in the cases where it is not triggered, see the
changes under `plugins` for a good example.

Also, the new return type of `Pretyping.understand` should undergo
careful review.

We don't touch `Impargs` as it is not clear how to proceed, however,
the current type of `compute_implicits_gen` looks very suspicious as
it is called often with free evars.

Some TODOs are:

- impargs was calling whd_all, the Econstr equivalent can be either
  + Reductionops.whd_all [which does refolding and no sharing]
  + Reductionops.clos_whd_flags with all as a flag.

1 files changed, 2 insertions, 1 deletions

diff --git a/plugins/ssr/ssrview.ml b/plugins/ssr/ssrview.ml
index 61b65e347..f2990070b 100644
--- a/plugins/ssr/ssrview.ml
+++ b/plugins/ssr/ssrview.ml
@@ -55,7 +55,8 @@ let in_viewhint =
        Libobject.classify_function = classify_viewhint }
 
 let glob_view_hints lvh =
-  List.map (Constrintern.intern_constr (Global.env ())) lvh
+  let env = Global.env () in
+  List.map (Constrintern.intern_constr env Evd.(from_env env)) lvh
 
 let add_view_hints lvh i = Lib.add_anonymous_leaf (in_viewhint (i, lvh))