Resolving dependencies... Configuring ghc-paths-0.1.0.9... Building ghc-paths-0.1.0.9... Installed ghc-paths-0.1.0.9 Configuring haskell-dap-0.0.6.0... Building haskell-dap-0.0.6.0... Failed to install haskell-dap-0.0.6.0 Build log ( /home/builder/.cabal/logs/ghc-8.4.3/haskell-dap-0.0.6.0-8EfH2A17i5RCSuIYyid8vk.log ): cabal: Entering directory '/tmp/cabal-tmp-10035/haskell-dap-0.0.6.0' Configuring haskell-dap-0.0.6.0... Preprocessing library for haskell-dap-0.0.6.0.. Building library for haskell-dap-0.0.6.0.. [1 of 1] Compiling GHCi.DAP.IFData ( src/GHCi/DAP/IFData.hs, dist/build/GHCi/DAP/IFData.o ) ignoring (possibly broken) abi-depends field for packages Preprocessing executable 'haskell-dap' for haskell-dap-0.0.6.0.. cabal: can't find source for GHCMain in app, dist/build/haskell-dap/autogen, dist/build/global-autogen cabal: Leaving directory '/tmp/cabal-tmp-10035/haskell-dap-0.0.6.0' cabal: Error: some packages failed to install: haskell-dap-0.0.6.0-8EfH2A17i5RCSuIYyid8vk failed during the building phase. The exception was: ExitFailure 1