Remove unnecessary import.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
ezyang · Apr 14, 2016 · 798ed77 · 798ed77
1 parent 7464103
commit 798ed77
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diff --git a/GhcAction.hs b/GhcAction.hs
@@ -32,7 +32,6 @@ import Packages ( lookupModuleWithSuggestions )
 
 import GhcShakeInstances ()
 import Compat
-import PersistentCache
 
 import Development.Shake
 import Development.Shake.Classes

diff --git a/ghc-shake b/ghc-shake
@@ -27,6 +27,7 @@ for var in "$@"; do
         ARGS+=("/srv/code/ghc-shake/dist-newstyle/packagedb/ghc-8.0.0.20160204")
         ARGS+=("-plugin-package")
         ARGS+=("ghc-shake")
+        ARGS+=("-Wredundant-constraints")
     fi
 done
 exec "$(dirname $(realpath $0))/ghc" "${ARGS[@]}" $SHAKE_ARGS