Resolving dependencies...
Configuring Diff-0.3.0...
Building Diff-0.3.0...
Preprocessing library Diff-0.3.0...
[1 of 2] Compiling Data.Algorithm.Diff ( src/Data/Algorithm/Diff.hs, dist/build/Data/Algorithm/Diff.o )
[2 of 2] Compiling Data.Algorithm.DiffOutput ( src/Data/Algorithm/DiffOutput.hs, dist/build/Data/Algorithm/DiffOutput.o )
In-place registering Diff-0.3.0...
Running Haddock for Diff-0.3.0...
Running hscolour for Diff-0.3.0...
Preprocessing library Diff-0.3.0...
Preprocessing library Diff-0.3.0...
Haddock coverage:
  88% (  7 /  8) in 'Data.Algorithm.Diff'
  50% (  3 /  6) in 'Data.Algorithm.DiffOutput'
Documentation created: dist/doc/html/Diff/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/Diff-0.3.0
Registering Diff-0.3.0...
Installed Diff-0.3.0
Downloading diffcabal-0.1...
Configuring diffcabal-0.1...
Building diffcabal-0.1...
Preprocessing executable 'diffcabal' for diffcabal-0.1...

Main.hs:27:18:
    Could not find module `Control.OldException'
    Perhaps you meant Control.Exception (from base)
    Use -v to see a list of the files searched for.
Failed to install diffcabal-0.1
cabal: Error: some packages failed to install:
diffcabal-0.1 failed during the building phase. The exception was:
ExitFailure 1