X-Git-Url: http://git.megacz.com/?p=coq-hetmet.git;a=blobdiff_plain;f=src%2FHaskCoreVars.v;h=562b478ff99ae0cb2da1e0777e97851ac87ba1ab;hp=6e611282b5e7ebe6910416459061335071c06e07;hb=53d4f1ce851b924cab5dc39419179a366001cbca;hpb=bcb16a7fa1ff772f12807c4587609fd756b7762e

diff --git a/src/HaskCoreVars.v b/src/HaskCoreVars.v
index 6e61128..562b478 100644
--- a/src/HaskCoreVars.v
+++ b/src/HaskCoreVars.v
@@ -5,10 +5,11 @@
 Generalizable All Variables.
 Require Import Preamble.
 Require Import General.
+Require Import Coq.Strings.String.
 
 (* GHC uses a single type for expression variables, type variables, and coercion variables; this is that type *)
-Variable CoreVar          : Type.                                               Extract Inlined Constant CoreVar    => "Var.Var".
-Variable coreVar_eq       : forall (a b:CoreVar), sumbool (a=b) (not (a=b)).    Extract Inlined Constant coreVar_eq => "(==)".
-Axiom    coreVar_eq_refl  : forall v, (coreVar_eq v v) = (left _ (refl_equal v)).
-Instance CoreVarEqDecidable : EqDecidable CoreVar := { eqd_dec            := coreVar_eq }.
-
+Variable CoreVar            : Type.                                               Extract Inlined Constant CoreVar    => "Var.Var".
+Variable coreVar_eq         : forall (a b:CoreVar), sumbool (a=b) (not (a=b)).    Extract Inlined Constant coreVar_eq => "(==)".
+Variable coreVarToString    : CoreVar      -> string.             Extract Inlined Constant coreVarToString => "outputableToString".
+Instance CoreVarEqDecidable : EqDecidable CoreVar := { eqd_dec  := coreVar_eq      }.
+Instance CoreVarToString    : ToString CoreVar    := { toString := coreVarToString }.