Merge pull request #206 from phadej/remove-Wnoncanonical-monadfail-instances

-Wnoncanonical-monadfail-instances is deprecated: fail is no longer a…

Author: bgamari

binary.cabal

@@ -59,7 +59,7 @@ library
   ghc-options:     -O2 -Wall -fliberate-case-threshold=1000
 
   if impl(ghc >= 8.0)
-    ghc-options: -Wcompat -Wnoncanonical-monad-instances -Wnoncanonical-monadfail-instances
+    ghc-options: -Wcompat -Wnoncanonical-monad-instances
   default-language: Haskell2010
 
 test-suite qc