Resolving dependencies...
Configuring mtl-2.2.1...
Configuring text-1.2.2.1...
Building mtl-2.2.1...
Building text-1.2.2.1...
Installed mtl-2.2.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring llvm-general-pure-3.2.7.2...
Failed to install llvm-general-pure-3.2.7.2
Build log ( /home/builder/.cabal/logs/llvm-general-pure-3.2.7.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-10119/llvm-general-pure-3.2.7.2'
cabal: Leaving directory '/tmp/cabal-tmp-10119/llvm-general-pure-3.2.7.2'
cabal: Error: some packages failed to install:
llvm-general-pure-3.2.7.2 failed during the configure step. The exception was:
user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error:

/tmp/cabal-tmp-10119/llvm-general-pure-3.2.7.2/dist/setup/setup.hs:14:1:
error:
Failed to load interface for ‘System.SetEnv’
Use -v to see a list of the files searched for.
)