Hello, I want to support the case of a GHC 7.10.3 release. The show-stopper for our company in 7.10.2 consists of ticket #10726 https://ghc.haskell.org/trac/ghc/ticket/10726 and ticket #10795 https://ghc.haskell.org/trac/ghc/ticket/10795 I.e. I am not able to compile my code on MS Windows and reached a point where my workaround is exhausted (reducing overall file path length in the project dependency). Luckily the fix has already been implemented and merged (into the 7.10 branch and HEAD). Cf. this commit https://github.com/ghc/ghc/commit/296bc70b5ff6c853f2782e9ec5aa47a52110345e and this stack issue: https://github.com/commercialhaskell/stack/issues/795#issuecomment-140618684 Thanks! Ruben Moor