Resolving dependencies...
Configuring List-0.5.2...
Configuring text-1.2.2.1...
Building List-0.5.2...
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed List-0.5.2
Building utf8-string-1.0.1.1...
Installed utf8-string-1.0.1.1
Installed text-1.2.2.1
Configuring hexpat-0.20.9...
Building hexpat-0.20.9...
Installed hexpat-0.20.9
Configuring hexpat-pickle-0.2...
Building hexpat-pickle-0.2...
Failed to install hexpat-pickle-0.2
Build log ( /home/builder/.cabal/logs/hexpat-pickle-0.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-14412/hexpat-pickle-0.2'
Configuring hexpat-pickle-0.2...
Building hexpat-pickle-0.2...
Preprocessing library hexpat-pickle-0.2...
[1 of 1] Compiling Text.XML.Expat.Pickle ( Text/XML/Expat/Pickle.hs, dist/build/Text/XML/Expat/Pickle.o )

Text/XML/Expat/Pickle.hs:162:1: error:
    Failed to load interface for ‘Text.XML.Expat.IO’
    Perhaps you meant
      Text.XML.Expat.SAX (from hexpat-0.20.9)
      Text.XML.Expat.Proc (from hexpat-0.20.9)
      Text.XML.Expat.Tree (from hexpat-0.20.9)
    Use -v to see a list of the files searched for.

Text/XML/Expat/Pickle.hs:165:1: error:
    Failed to load interface for ‘Text.XML.Expat.Qualified’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-14412/hexpat-pickle-0.2'
cabal: Error: some packages failed to install:
hexpat-pickle-0.2 failed during the building phase. The exception was:
ExitFailure 1