Resolving dependencies...
Configuring mtl-2.2.1...
Configuring network-2.6.3.1...
Building mtl-2.2.1...
Building network-2.6.3.1...
Installed mtl-2.2.1
Configuring syb-0.6...
Building syb-0.6...
Configuring text-1.2.2.1...
Installed syb-0.6
Building text-1.2.2.1...
Installed network-2.6.3.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring network-uri-2.6.1.0...
Configuring json-0.9.1...
Building network-uri-2.6.1.0...
Building json-0.9.1...
Installed network-uri-2.6.1.0
Configuring HTTP-4000.3.3...
Building HTTP-4000.3.3...
Installed json-0.9.1
Installed HTTP-4000.3.3
Configuring g-npm-0.1.0...
Building g-npm-0.1.0...
Failed to install g-npm-0.1.0
Build log ( /home/builder/.cabal/logs/g-npm-0.1.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-27365/g-npm-0.1.0'
Configuring g-npm-0.1.0...
Building g-npm-0.1.0...
Preprocessing executable 'g-npm' for g-npm-0.1.0...
[1 of 2] Compiling Npm              ( src/Npm.hs, dist/build/g-npm/g-npm-tmp/Npm.o )
[2 of 2] Compiling Main             ( src/Main.hs, dist/build/g-npm/g-npm-tmp/Main.o )

src/Main.hs:8:1: error:
    Failed to load interface for ‘System.Directory’
    It is a member of the hidden package ‘directory-1.2.6.2’.
    Perhaps you need to add ‘directory’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-27365/g-npm-0.1.0'
cabal: Error: some packages failed to install:
g-npm-0.1.0 failed during the building phase. The exception was:
ExitFailure 1