Import Data.Monoid for the benefit of old GHCs.
Import Data.Monoid for the benefit of old GHCs.

CulpaBS/wbBach,diku-dk/futhark,diku-dk/futhark,ihc/futhark,diku-dk/futhark,mrakgr/futhark,HIPERFIT/futhark,mrakgr/futhark,mrakgr/futhark,HIPERFIT/futhark,ihc/futhark,diku-dk/futhark,HIPERFIT/futhark,ihc/futhark,diku-dk/futhark