From https://github.com/IxpertaSolutions/freer-effects/commit/4b83056f22800581749ba1aff0437d73a62508d6
From: Tomas Janousek <tomi@nomi.cz>
Date: Tue, 14 Mar 2017 12:38:55 +0100
Subject: [PATCH] Remove examples/src/NonDet.hs

The module isn't imported anywhere so `stack build` works fine even
though ghci fails (forgotten import in #11) and it's a duplicate of
tests/Tests/NonDet.hs anyway.

Addresses #11
--- a/freer-effects.cabal
+++ b/freer-effects.cabal
@@ -101,7 +101,6 @@ executable freer-examples
     , Coroutine
     , Cut
     , Fresh
-    , NonDet
     , Trace
 
   default-language:     Haskell2010