Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Downloading pretty-types-0.2.1.0...
Configuring pretty-types-0.2.1.0...
Building pretty-types-0.2.1.0...
Installed pretty-types-0.2.1.0