Resolving dependencies...
Configuring concurrent-extra-0.6...
Failed to install concurrent-extra-0.6
Build log ( /home/builder/.cabal/logs/concurrent-extra-0.6.log ):
cabal: Entering directory '/tmp/cabal-tmp-4589/concurrent-extra-0.6'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-4589/concurrent-extra-0.6/dist/setup/setup.hs, /tmp/cabal-tmp-4589/concurrent-extra-0.6/dist/setup/Main.o )
Linking /tmp/cabal-tmp-4589/concurrent-extra-0.6/dist/setup/setup ...
Configuring concurrent-extra-0.6...
setup: No executables, libraries, tests, or benchmarks found. Nothing to do.
cabal: Leaving directory '/tmp/cabal-tmp-4589/concurrent-extra-0.6'
cabal: Error: some packages failed to install:
concurrent-extra-0.6 failed during the configure step. The exception was:
ExitFailure 1