Hi, >https://patches.ubuntu.com/g/ghc/ghc_7.10.3-9ubuntu1.patch
this patch was already committed on ghc 8 branch, and I also committed on the master branch (7.10.3), however, I won't upload it. >An other option would be bootstrapping GHC in Debian with >-fPIC, but I'm not sure if this is viable. that might sound better in the long run, even if it requires probably more effort. I finished the Ubuntu haskell transition without many issues, so I presume this patch is safe for unstable, but I don't feel enough confident because I can't rebuild and NMU stuff in Debian :) G.