How to build Stack Yesod? - haskell

Question

I've been trying to use stack to start a yesod-simple project, but nothing I do will build this project. I've looked into other similar stackoverflow questions but couldn't get this to work. Can some one help me figure out what I need to do to get started?
Error
> stack build
Populated index cache.
yesod-persistent-1.4.0.6: configure
yesod-persistent-1.4.0.6: build
yesod-persistent-1.4.0.6: copy/register
yesod-form-1.4.9: configure
yesod-form-1.4.9: build
yesod-form-1.4.9: copy/register
yesod-auth-1.4.15: configure
yesod-auth-1.4.15: build
Progress: 3/6
-- While building package yesod-auth-1.4.15 using:
/Users/scottyluciano/.stack/setup-exe-cache/x86_64-osx/setup-Simple-Cabal-1.22.5.0-ghc-7.10.3 --builddir=.stack-work/dist/x86_64-osx/Cabal-1.22.5.0 build --ghc-options " -ddump-hi -ddump-to-file"
Process exited with code: ExitFailure 1
Logs have been written to: /Users/scottyluciano/Documents/tutorials/practice/.stack-work/logs/yesod-auth-1.4.15.log
Configuring yesod-auth-1.4.15...
Building yesod-auth-1.4.15...
Preprocessing library yesod-auth-1.4.15...
[ 1 of 12] Compiling Yesod.PasswordStore ( Yesod/PasswordStore.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/PasswordStore.o )
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/PasswordStore.hs:166:31: Warning:
Defaulting the following constraint(s) to type ‘Integer’
(Integral b0)
arising from a use of ‘^’ at Yesod/PasswordStore.hs:166:31
(Num b0)
arising from the literal ‘32’ at Yesod/PasswordStore.hs:166:32-33
In the first argument of ‘(-)’, namely ‘2 ^ 32’
In the first argument of ‘(*)’, namely ‘(2 ^ 32 - 1)’
In the second argument of ‘(>)’, namely ‘(2 ^ 32 - 1) * hLen’
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/PasswordStore.hs:419:1: Warning:
Defined but not used: ‘toStrict’
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/PasswordStore.hs:422:1: Warning:
Defined but not used: ‘fromStrict’
[ 2 of 12] Compiling Yesod.Auth.Message ( Yesod/Auth/Message.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Message.o )
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/Auth/Message.hs:24:1: Warning:
The import of ‘mappend’ from module ‘Data.Monoid’ is redundant
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/Auth/Message.hs:460:1: Warning:
Pattern match(es) are overlapped
In an equation for ‘finnishMessage’: finnishMessage Password = ...
/private/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/stack64861/yesod-auth-1.4.15/Yesod/Auth/Message.hs:460:1: Warning:
Pattern match(es) are non-exhaustive
In an equation for ‘finnishMessage’:
Patterns not matched: CurrentPassword
[ 3 of 12] Compiling Yesod.Auth.Routes ( Yesod/Auth/Routes.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Routes.o )
[ 4 of 12] Compiling Yesod.Auth ( Yesod/Auth.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth.o )
ghc: panic! (the 'impossible' happened)
(GHC version 7.10.3 for x86_64-apple-darwin):
Loading temp shared object failed: dlopen(/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/ghc65133_0/libghc_21.dylib, 5): no suitable image found. Did find:
/var/folders/kl/yp2gqzf116131b5gvs9pzttw0000gn/T/ghc65133_0/libghc_21.dylib: malformed mach-o: load commands size (36784) > 32768
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug

Answer 1

GHC 8.0.2 fixes the panic issue. By changing LTS to 8.0, the upgrade resolves all issues.