[[!comment format=mdwn username="joey" subject="""comment 6""" date="2017-12-29T15:56:21Z" content=""" You need this for it to build with the newer stack: --- a/stack.yaml +++ b/stack.yaml @@ -4,4 +4,5 @@ packages: resolver: lts-8.12 extra-deps: - propellor-5.1.0 +- archive: http://github.com/joeyh/threepenny-gui/archive/59242cf93bdb8eaa805f5c2b0241e9a1cba9a70f.zip explicit-setup-deps: However, that won't work with the [stack currently in debian](http://package.debian.org/haskell-stack) and since secret-project later installs that version of stack and runs it against the same stack.yaml file, I can't commit that change until Debian gets around to [upgrading haskell-stack](http://bugs.debian.org/877256) """]]