Resolving dependencies...
Configuring data-default-class-0.1.2.0...
Configuring dlist-0.8.0.2...
Building data-default-class-0.1.2.0...
Building dlist-0.8.0.2...
Installed data-default-class-0.1.2.0
Configuring microlens-0.4.7.0...
Building microlens-0.4.7.0...
Installed dlist-0.8.0.2
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Configuring old-locale-1.0.0.7...
Installed microlens-0.4.7.0
Building old-locale-1.0.0.7...
Configuring parallel-3.2.1.0...
Installed old-locale-1.0.0.7
Configuring stm-2.4.4.1...
Installed mtl-2.2.1
Building parallel-3.2.1.0...
Building stm-2.4.4.1...
Configuring primitive-0.6.1.0...
Installed parallel-3.2.1.0
Building primitive-0.6.1.0...
Configuring transformers-compat-0.5.1.4...
Installed stm-2.4.4.1
Building transformers-compat-0.5.1.4...
Configuring text-1.2.2.1...
Installed transformers-compat-0.5.1.4
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed primitive-0.6.1.0
Building utf8-string-1.0.1.1...
Configuring data-default-instances-containers-0.0.1...
Installed utf8-string-1.0.1.1
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 microlens-th-0.4.1.0...
Installed data-default-instances-old-locale-0.0.1
Building microlens-th-0.4.1.0...
Configuring microlens-mtl-0.1.10.0...
Installed text-1.2.2.1
Building microlens-mtl-0.1.10.0...
Configuring vector-0.11.0.0...
Installed microlens-th-0.4.1.0
Building vector-0.11.0.0...
Installed microlens-mtl-0.1.10.0
Configuring data-default-0.7.1.1...
Building data-default-0.7.1.1...
Configuring blaze-builder-0.4.0.2...
Installed data-default-0.7.1.1
Building blaze-builder-0.4.0.2...
Configuring hashable-1.2.4.0...
Installed blaze-builder-0.4.0.2
Building hashable-1.2.4.0...
Configuring parsec-3.1.11...
Installed hashable-1.2.4.0
Building parsec-3.1.11...
Installed parsec-3.1.11
Installed vector-0.11.0.0
Configuring vty-5.14...
Building vty-5.14...
Installed vty-5.14
Configuring vty-menu-0.0.4...
Building vty-menu-0.0.4...
Installed vty-menu-0.0.4
Configuring config-select-0.0.0...
Building config-select-0.0.0...
Failed to install config-select-0.0.0
Build log ( /home/builder/.cabal/logs/config-select-0.0.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-23120/config-select-0.0.0'
Configuring config-select-0.0.0...
Building config-select-0.0.0...
Preprocessing executable 'config-select' for config-select-0.0.0...
[1 of 2] Compiling Util.ConfigSelect ( Util/ConfigSelect.lhs, dist/build/config-select/config-select-tmp/Util/ConfigSelect.o )

Util/ConfigSelect.lhs:125:9: error:
    Ambiguous occurrence ‘isSymbolicLink’
    It could refer to either ‘System.Directory.isSymbolicLink’,
                             imported from ‘System.Directory’ at Util/ConfigSelect.lhs:23:2-24
                          or ‘System.Posix.Files.isSymbolicLink’,
                             imported from ‘System.Posix.Files’ at Util/ConfigSelect.lhs:25:2-26
                             (and originally defined in ‘unix-2.7.2.0:System.Posix.Files.Common’)
cabal: Leaving directory '/tmp/cabal-tmp-23120/config-select-0.0.0'
cabal: Error: some packages failed to install:
config-select-0.0.0 failed during the building phase. The exception was:
ExitFailure 1