Plese update Haskell too, I can't use ghc 7.8.3 via stack (on Arch linux) anymore.
Now I have to blindly use 7.10.3 to test code locally and hope nothing will break when submit.
There is no major issue yet but update would be nice
$ stack --resolver=lts-0.3 setup
Run from outside a project, using implicit global project config
Using resolver: lts-0.3 specified on command line
No information found for ghc-7.8.3.
Supported versions for OS key 'linux64-ncurses6': GhcVersion 7.10.3, GhcVersion 8.0.1