While updating the AUR package for jhc for 0.7.6 it came up with this error when trying to build src/Info/Info.hs:68:13: Ambiguous occurrence `empty' It could refer to either `Info.Info.empty', defined at src/Info/Info.hs:162:0 or `Data.Generics.empty', imported from Data.Generics at src/Info/Info.hs:23:0-19 src/Info/Info.hs:119:23: Ambiguous occurrence `empty' It could refer to either `Info.Info.empty', defined at src/Info/Info.hs:162:0 or `Data.Generics.empty', imported from Data.Generics at src/Info/Info.hs:23:0-19 make[1]: *** [jhc] Error 1 make[1]: Leaving directory `/tmp/packerbuild-1000/jhc/jhc/src/jhc-0.7.6' make: *** [all] Error 2 Aborting... The build failed.