From 886a9c2fb25e32bd87b3fce38023b3e701134d23 Mon Sep 17 00:00:00 2001
From: Emilio Jesus Gallego Arias
Date: Wed, 27 Dec 2017 20:22:23 +0100
Subject: [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.
---
 dev/base_include | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'dev/base_include')

diff --git a/dev/base_include b/dev/base_include
index 350ccaa109..39e3ef2bde 100644
--- a/dev/base_include
+++ b/dev/base_include
@@ -196,7 +196,10 @@ let parse_tac    = Pcoq.parse_string Ltac_plugin.Pltac.tactic;;
 (* build a term of type glob_constr without type-checking or resolution of 
    implicit syntax *)
 
-let e s = Constrintern.intern_constr (Global.env()) (parse_constr s);;
+let e s =
+  let env = Global.env () in
+  let sigma = Evd.from_env env in
+  Constrintern.intern_constr env sigma (parse_constr s);;
 
 (* build a term of type constr with type-checking and resolution of 
    implicit syntax *)
-- 
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