From a418f664cbb289c4b3bf72aa2111ee02b8d44013 Mon Sep 17 00:00:00 2001
From: letouzey
Date: Fri, 4 Apr 2008 19:10:01 +0000
Subject: A file that can be loaded when a migration from Set to Type is
 desired (for instance as a consequence of the Set/Type switch of a library
 such as FSets). After a "Require Export SetIsType.", Set becomes a mere
 notation for Type (I love notations !).

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10757 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 Makefile.common            |  3 ++-
 theories/Logic/SetIsType.v | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 theories/Logic/SetIsType.v

diff --git a/Makefile.common b/Makefile.common
index 2cecce059c..11a7cbd0fe 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -507,7 +507,8 @@ LOGICVO:=\
  theories/Logic/ClassicalEpsilon.vo   theories/Logic/ClassicalUniqueChoice.vo \
  theories/Logic/DecidableType.vo      theories/Logic/DecidableTypeEx.vo \
  theories/Logic/Epsilon.vo            theories/Logic/ConstructiveEpsilon.vo \
- theories/Logic/Description.vo        theories/Logic/IndefiniteDescription.vo
+ theories/Logic/Description.vo        theories/Logic/IndefiniteDescription.vo \
+ theories/Logic/SetIsType.vo
 
 ARITHVO:=\
  theories/Arith/Arith.vo        theories/Arith/Gt.vo          \
diff --git a/theories/Logic/SetIsType.v b/theories/Logic/SetIsType.v
new file mode 100644
index 0000000000..3286beb496
--- /dev/null
+++ b/theories/Logic/SetIsType.v
@@ -0,0 +1,17 @@
+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(** * The Set universe seen as a synonym for Type *)
+
+(** After loading this file, Set becomes just another name for Type.
+    This allows to easily perform a Set-to-Type migration, or at least
+    test whether a development relies or not on specific features of
+    Set: simply insert some Require Export of this file at starting
+    points of the development and try to recompile...  *)
+
+Notation "'Set'" := Type (only parsing).
\ No newline at end of file
-- 
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