
<interactive>:4:9: Warning:
    Couldn't match type ‘[Dec]’ with ‘Exp’
    Expected type: Q Exp
      Actual type: DecsQ
    In the expression: [d| a = () |] :: Q Exp
    In an equation for ‘x’: x = [d| a = () |] :: Q Exp

<interactive>:1:1:
    Exception when trying to run compile-time code:
      <interactive>:4:9:
    Couldn't match type ‘[Dec]’ with ‘Exp’
    Expected type: Q Exp
      Actual type: DecsQ
    In the expression: [d| a = () |] :: Q Exp
    In an equation for ‘x’: x = [d| a = () |] :: Q Exp
(deferred type error)
    Code: x
    In the splice: $x