Resolving dependencies...
Configuring cereal-0.5.4.0...
Configuring data-default-class-0.1.2.0...
Building data-default-class-0.1.2.0...
Building cereal-0.5.4.0...
Installed data-default-class-0.1.2.0
Configuring dlist-0.8.0.2...
Building dlist-0.8.0.2...
Configuring entropy-0.3.7...
Installed dlist-0.8.0.2
Configuring fmlist-0.9...
Installed cereal-0.5.4.0
Building fmlist-0.9...
Configuring generic-deriving-1.11.1...
Installed fmlist-0.9
Building generic-deriving-1.11.1...
Building entropy-0.3.7...
Configuring mtl-2.2.1...
Installed entropy-0.3.7
Building mtl-2.2.1...
Configuring network-2.6.3.1...
Installed mtl-2.2.1
Building network-2.6.3.1...
Configuring old-locale-1.0.0.7...
Installed generic-deriving-1.11.1
Configuring primitive-0.6.1.0...
Installed network-2.6.3.1
Building old-locale-1.0.0.7...
Building primitive-0.6.1.0...
Configuring stm-2.4.4.1...
Installed old-locale-1.0.0.7
Building stm-2.4.4.1...
Configuring text-1.2.2.1...
Installed stm-2.4.4.1
Configuring transformers-compat-0.5.1.4...
Installed primitive-0.6.1.0
Building text-1.2.2.1...
Building transformers-compat-0.5.1.4...
Configuring utf8-string-1.0.1.1...
Installed transformers-compat-0.5.1.4
Building utf8-string-1.0.1.1...
Configuring zlib-0.6.1.2...
Installed utf8-string-1.0.1.1
Building zlib-0.6.1.2...
Configuring data-default-instances-containers-0.0.1...
Installed zlib-0.6.1.2
Building data-default-instances-containers-0.0.1...
Installed data-default-instances-containers-0.0.1
Configuring data-default-instances-dlist-0.0.1...
Building data-default-instances-dlist-0.0.1...
Configuring data-default-instances-old-locale-0.0.1...
Installed data-default-instances-dlist-0.0.1
Building data-default-instances-old-locale-0.0.1...
Configuring regex-base-0.93.2...
Installed text-1.2.2.1
Configuring exceptions-0.8.3...
Installed data-default-instances-old-locale-0.0.1
Building regex-base-0.93.2...
Building exceptions-0.8.3...
Configuring vector-0.11.0.0...
Installed regex-base-0.93.2
Building vector-0.11.0.0...
Configuring tagged-0.8.5...
Installed exceptions-0.8.3
Building tagged-0.8.5...
Installed tagged-0.8.5
Configuring data-default-0.7.1.1...
Building data-default-0.7.1.1...
Configuring parsec-3.1.11...
Installed data-default-0.7.1.1
Building parsec-3.1.11...
Configuring crypto-api-0.13.2...
Installed parsec-3.1.11
Building crypto-api-0.13.2...
Configuring regex-posix-0.95.2...
Installed crypto-api-0.13.2
Building regex-posix-0.95.2...
Configuring regex-tdfa-1.2.2...
Installed vector-0.11.0.0
Configuring pureMD5-2.1.3...
Installed regex-posix-0.95.2
Building regex-tdfa-1.2.2...
Building pureMD5-2.1.3...
Installed pureMD5-2.1.3
Configuring regex-compat-0.95.1...
Building regex-compat-0.95.1...
Configuring ListLike-4.5...
Installed regex-compat-0.95.1
Building ListLike-4.5...
Installed regex-tdfa-1.2.2
Installed ListLike-4.5
Configuring process-extras-0.7.1...
Building process-extras-0.7.1...
Installed process-extras-0.7.1
Configuring Unixutils-1.54.1...
Building Unixutils-1.54.1...
Installed Unixutils-1.54.1
Downloading debian-1.0...
Configuring debian-1.0...
Failed to install debian-1.0
Build log ( /home/builder/.cabal/logs/debian-1.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-13122/debian-1.0'
cabal: Leaving directory '/tmp/cabal-tmp-13122/debian-1.0'
cabal: Error: some packages failed to install:
debian-1.0 failed during the configure step. The exception was:
user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error:

/tmp/cabal-tmp-13122/debian-1.0/dist/setup/setup.hs:18:34: error:
Ambiguous occurrence ‘withCurrentDirectory’
It could refer to either ‘System.Directory.withCurrentDirectory’,
imported from ‘System.Directory’ at
/tmp/cabal-tmp-13122/debian-1.0/dist/setup/setup.hs:8:1-23
or ‘Main.withCurrentDirectory’,
defined at /tmp/cabal-tmp-13122/debian-1.0/dist/setup/setup.hs:12:1
)