Briefly, the important point is that the chroot environment must be created with devtools <= 20130408 (the last version that has makechrootpkg that support the "-d" flag). Once created, packages can be built even with newest versions of devtools that doesn't support the "-d" flag (but this requires to adapt the makeahpkg script to remove it).

At the opposite, if the chroot is created with a newer version, Haskell packages will build and install, but with a message like:

    Diff-0.3.0: cannot find libHSDiff-0.3.0.a on library path (use --force to override)