Resolving dependencies...
Configuring HUnit-1.2.5.2...
Building HUnit-1.2.5.2...
Preprocessing library HUnit-1.2.5.2...
[1 of 5] Compiling Test.HUnit.Terminal ( Test/HUnit/Terminal.hs, dist/build/Test/HUnit/Terminal.o )
[2 of 5] Compiling Test.HUnit.Lang  ( Test/HUnit/Lang.hs, dist/build/Test/HUnit/Lang.o )
[3 of 5] Compiling Test.HUnit.Base  ( Test/HUnit/Base.hs, dist/build/Test/HUnit/Base.o )
[4 of 5] Compiling Test.HUnit.Text  ( Test/HUnit/Text.hs, dist/build/Test/HUnit/Text.o )
[5 of 5] Compiling Test.HUnit       ( Test/HUnit.hs, dist/build/Test/HUnit.o )
In-place registering HUnit-1.2.5.2...
Running Haddock for HUnit-1.2.5.2...
Running hscolour for HUnit-1.2.5.2...
Preprocessing library HUnit-1.2.5.2...
Preprocessing library HUnit-1.2.5.2...
Haddock coverage:
 100% (  2 /  2) in 'Test.HUnit.Terminal'
  86% (  6 /  7) in 'Test.HUnit.Lang'
 100% ( 33 / 33) in 'Test.HUnit.Base'
 100% (  8 /  8) in 'Test.HUnit.Text'
 100% (  3 /  3) in 'Test.HUnit'
Documentation created: dist/doc/html/HUnit/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/HUnit-1.2.5.2
Registering HUnit-1.2.5.2...
Installed HUnit-1.2.5.2
Configuring hstats-0.3...
Building hstats-0.3...
Preprocessing library hstats-0.3...

src/Math/Statistics.hs:1:1:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.2
Failed to install hstats-0.3
Configuring multiset-0.2.2...
Building multiset-0.2.2...
Preprocessing library multiset-0.2.2...
[1 of 2] Compiling Data.MultiSet    ( Data/MultiSet.hs, dist/build/Data/MultiSet.o )
[2 of 2] Compiling Data.IntMultiSet ( Data/IntMultiSet.hs, dist/build/Data/IntMultiSet.o )
In-place registering multiset-0.2.2...
Running Haddock for multiset-0.2.2...
Running hscolour for multiset-0.2.2...
Preprocessing library multiset-0.2.2...
Preprocessing library multiset-0.2.2...
Haddock coverage:
 100% ( 85 / 85) in 'Data.MultiSet'
  99% ( 84 / 85) in 'Data.IntMultiSet'
Documentation created: dist/doc/html/multiset/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/multiset-0.2.2
Registering multiset-0.2.2...
Installed multiset-0.2.2
cabal: Error: some packages failed to install:
hieraclus-0.1 depends on hstats-0.3 which failed to install.
hstats-0.3 failed during the building phase. The exception was:
ExitFailure 1