Resolving dependencies...
Configuring tagged-0.7...
Building tagged-0.7...
Preprocessing library tagged-0.7...
[1 of 2] Compiling Data.Proxy       ( old/Data/Proxy.hs, dist/build/Data/Proxy.o )
[2 of 2] Compiling Data.Tagged      ( src/Data/Tagged.hs, dist/build/Data/Tagged.o )
In-place registering tagged-0.7...
Running Haddock for tagged-0.7...
Running hscolour for tagged-0.7...
Preprocessing library tagged-0.7...
Preprocessing library tagged-0.7...
Haddock coverage:
  80% (  4 /  5) in 'Data.Proxy'
  92% ( 11 / 12) in 'Data.Tagged'
Documentation created: dist/doc/html/tagged/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/tagged-0.7
Registering tagged-0.7...
Installed tagged-0.7
Downloading reflection-1.3...
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 an existential context,
      but `Magic' does
    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