also disable haddock for i686: runs out of memory now like armv7hl
Warning: GHC.IfaceToCore: could not find link destinations for:
- GHC.IfaceToCore.mergeIfaceDecl
Warning: GHC.Iface.Rename: could not find link destinations for:
- GHC.Iface.Rename.ShIfM
Warning: GHC.Types.Name.Shape: could not find link destinations for:
- GHC.Types.Name.Shape.uAvailInfos
haddock: out of memory (requested 1048576 bytes)
Warning: GHC.Tc.Gen.Splice: could not find link