checking for gfind... /opt/local/bin/gfind
checking for sort... /opt/local/bin/sort
checking for GHC version date... given 8.1.20160220
checking for GHC Git commit id... inferred a8653c84a6322d10c646b05ea5406a23a4b7ffbb
checking for ghc... /usr/local/bin/ghc
checking version of ghc... 7.8.4
configure: error: GHC version 7.10 or later is required to compile GHC.