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support ghc-911 #70

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6 changes: 5 additions & 1 deletion System/Console/CmdArgs/Quote.hs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
{-# LANGUAGE TemplateHaskell, PatternGuards, MagicHash #-}
{-# LANGUAGE TemplateHaskell, PatternGuards, MagicHash, CPP #-}

-- | This module provides a quotation feature to let you write command line
-- arguments in the impure style, but have them translated into the pure style,
Expand Down Expand Up @@ -150,7 +150,11 @@ rename = transformBi f
simplify :: [Dec] -> [Dec]
simplify = transformBi f
where
#if MIN_VERSION_template_haskell(2,22,0)
f (AppE (LamE [VisAP (VarP v)] bod) x) = f $ subst v x bod
#else
f (AppE (LamE [VarP v] bod) x) = f $ subst v x bod
#endif
f x = x

subst v x bod = transform f bod
Expand Down