Resolving dependencies...
Configuring tagged-0.8.2...
Building tagged-0.8.2...
Preprocessing library tagged-0.8.2...
[1 of 2] Compiling Data.Proxy.TH    ( src/Data/Proxy/TH.hs, dist/build/Data/Proxy/TH.o )
[2 of 2] Compiling Data.Tagged      ( src/Data/Tagged.hs, dist/build/Data/Tagged.o )
In-place registering tagged-0.8.2...
Running Haddock for tagged-0.8.2...
Running hscolour for tagged-0.8.2...
Preprocessing library tagged-0.8.2...
Preprocessing library tagged-0.8.2...
Haddock coverage:
  67% (  2 /  3) in 'Data.Proxy.TH'
  Missing documentation for:
    Module header
  93% ( 14 / 15) in 'Data.Tagged'
  Missing documentation for:
    witness (src/Data/Tagged.hs:308)
Documentation created: dist/doc/html/tagged/index.html,
dist/doc/html/tagged/tagged.txt
Creating package registration file:
/tmp/pkgConf-tagged-0.8278722862233665123.2
Installing library in
/home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/tagged-0.8.2-4zanMqQLQHpBO0ZYm7KGkc
Registering tagged-0.8.2...
Installed tagged-0.8.2
Configuring reflection-1.3...
Building reflection-1.3...
Preprocessing library reflection-1.3...
[1 of 1] Compiling Data.Reflection  ( fast/Data/Reflection.hs, dist/build/Data/Reflection.o )

fast/Data/Reflection.hs:92:21:
    A newtype constructor cannot have existential type variables
    Magic :: forall a r (k :: BOX).
             (forall (s :: k). Reifies s a => Proxy s -> r) -> Magic a r
    In the definition of data constructor ‘Magic’
    In the newtype declaration for ‘Magic’
Failed to install reflection-1.3
cabal: Error: some packages failed to install:
reflection-1.3 failed during the building phase. The exception was:
ExitFailure 1