Resolving dependencies...
Configuring darcs-2.10.3...
Failed to install darcs-2.10.3
Build log ( /home/builder/.cabal/logs/darcs-2.10.3.log ):
cabal: Entering directory '/tmp/cabal-tmp-6480/darcs-2.10.3'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-6480/darcs-2.10.3/dist/setup/setup.hs, /tmp/cabal-tmp-6480/darcs-2.10.3/dist/setup/Main.o )
Linking /tmp/cabal-tmp-6480/darcs-2.10.3/dist/setup/setup ...
Configuring darcs-2.10.3...
checking whether to use -liconv... /tmp/cabal-tmp-6480/darcs-2.10.3/dist/setup/setup.hs:152:15-41: Irrefutable
pattern failed for pattern Just lib
cabal: Leaving directory '/tmp/cabal-tmp-6480/darcs-2.10.3'
cabal: Error: some packages failed to install:
darcs-2.10.3 failed during the configure step. The exception was:
ExitFailure 1