If you see this message: Exit code: 1 Stderr: compiler/llvmGen/LlvmCodeGen/Base.hs:192:36: error: • Couldn't match expected type ‘Int’ with actual type ‘(Integer, Integer)’ • In the first argument of ‘LlvmVersion’, namely ‘(7, 0)’ In the expression: LlvmVersion (7, 0) In an equation for ‘supportedLlvmVersion’: supportedLlvmVersion = LlvmVersion (7, 0) | 192 | supportedLlvmVersion = LlvmVersion sUPPORTED_LLVM_VERSION | ^^^^^ ) Then you need to delete the `includes/ghcautoconf.h` file. It is a file generated by the Make build system. Cheers, Matt