persistent fails to compile with ghc 7.4.1-rc1

[markwright]

Compiling source in /var/tmp/portage/dev-haskell/persistent-0.6.4.3/work/persistent-0.6.4.3 ...
./setup build
Building persistent-0.6.4.3...
Preprocessing library persistent-0.6.4.3...
[ 1 of 10] Compiling Database.Persist.TH.Library ( Database/Persist/TH/Library.hs, dist/build/Database/Persist/TH/Library.o )
[ 2 of 10] Compiling Database.Persist.Util ( Database/Persist/Util.hs, dist/build/Database/Persist/Util.o )
[ 3 of 10] Compiling Database.Persist.Base ( Database/Persist/Base.hs, dist/build/Database/Persist/Base.o )

Database/Persist/Base.hs:384:52:
Expecting two more arguments to b' In the typePersistEntity val => val -> b m (Key b val)'
In the class declaration for `PersistBackend'

• ERROR: dev-haskell/persistent-0.6.4.3 failed (compile phase):
• setup build failed

[snoyberg]

Thanks for bringing this up, I've emailed the cafe.

[snoyberg]

I've released a new version of persistent (0.6.4.4) with an explicit kind signature that should fix the issue. Can you test and confirm?

Git commit: b1fbe35

[markwright]

Thanks, 0.6.4.4 builds fine with ghc 7.4.1-rc1.