Bug#1009883: dh_haskell_install_ghc_registration: does not support directories

[Scott Talbert]

Package: haskell-devscripts
Severity: normal

Dear Maintainer,

While attempting to update haskell-attoparsec to upstream release
0.14.4, it was observed that this version of attoparsec produces a
*directory* and not a *file* for its GHC registration.  This currently
fails because of bug #1009873, but after that is fixed, this will still
fail because dh_haskell_install_dhc_registration is searching for:
"Creating package registration file"
where attoparsec produces:
"Creating package registration directory"

And thus will result in "Cannot get package registration file." once the
aforementioned bug is fixed.  It's not quite clear to me how a directory
is supposed to be handled (install each file in the directory?), but perhaps
someone with more familiarity with GHC registrations might know.

Thanks,
Scott