Resolving dependencies...
Configuring old-locale-1.0.0.7...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Building old-locale-1.0.0.7...
Installed old-locale-1.0.0.7
Configuring old-time-1.1.0.3...
Building old-time-1.1.0.3...
Installed mtl-2.2.1
Installed old-time-1.1.0.3
Configuring Takusen-0.8.1...
Failed to install Takusen-0.8.1
Build log ( /home/builder/.cabal/logs/Takusen-0.8.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-22484/Takusen-0.8.1'
cabal: Leaving directory '/tmp/cabal-tmp-22484/Takusen-0.8.1'
cabal: Error: some packages failed to install:
Takusen-0.8.1 failed during the configure step. The exception was:
user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error:

/tmp/cabal-tmp-22484/Takusen-0.8.1/dist/setup/setup.hs:13:27: error:
Module
‘Distribution.PackageDescription’
does not export
‘writeHookedBuildInfo’

/tmp/cabal-tmp-22484/Takusen-0.8.1/dist/setup/setup.hs:30:26: error:
Module
‘Distribution.Simple.Register’
does not export
‘writeInstalledConfig’

/tmp/cabal-tmp-22484/Takusen-0.8.1/dist/setup/setup.hs:30:47: error:
Module
‘Distribution.Simple.Register’
does not export
‘removeRegScripts’

/tmp/cabal-tmp-22484/Takusen-0.8.1/dist/setup/setup.hs:36:25: error:
Module ‘System.IO.Error’ does not export ‘try’
)