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Big tidy-up of deriving code
[ghc-hetmet.git]
/
compiler
/
typecheck
/
Inst.lhs
diff --git
a/compiler/typecheck/Inst.lhs
b/compiler/typecheck/Inst.lhs
index
49fc942
..
49fba35
100644
(file)
--- a/
compiler/typecheck/Inst.lhs
+++ b/
compiler/typecheck/Inst.lhs
@@
-751,7
+751,7
@@
lookupSimpleInst (Dict {tci_pred = pred, tci_loc = loc})
(theta, _) = tcSplitPhiTy dfun_rho
src_loc = instLocSpan loc
dfun = HsVar dfun_id
- tys = map (substTyVar tenv') tyvars
+ tys = substTyVars tenv' tyvars
; if null theta then
returnM (GenInst [] (L src_loc $ HsWrap (mkWpTyApps tys) dfun))
else do