I've uploaded a build of Haskell Platform 2015.2.0.0 Alpha 2 for generic debian linux systems.
It includes GHC 7.10.2, using the generic linux bindist.

This is a tarball, not a package. Installation instructions:

    cd /
    sudo tar xvf ...downloaded-tarfile...
    sudo /usr/local/haskell/ghc-7.10.1-x86-64/bin/activate-hs

Notes:
- Mark