SafeLang12.hs:2:14: warning:
    -XTemplateHaskell is not allowed in Safe Haskell; ignoring -XTemplateHaskell

SafeLang12_B.hs:2:14: warning:
    -XTemplateHaskell is not allowed in Safe Haskell; ignoring -XTemplateHaskell
[1 of 3] Compiling SafeLang12_A     ( SafeLang12_A.hs, SafeLang12_A.o )
[2 of 3] Compiling SafeLang12_B     ( SafeLang12_B.hs, SafeLang12_B.o )
[3 of 3] Compiling Main             ( SafeLang12.hs, SafeLang12.o )

SafeLang12.hs:8:1: error:
    parse error on input ‘$’
    Perhaps you intended to use TemplateHaskell