Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Starting OneTuple-0.2.2 Starting Only-0.1 Building OneTuple-0.2.2 Building Only-0.1 Completed OneTuple-0.2.2 Completed Only-0.1 Starting single-tuple-0.1.0.0 Building single-tuple-0.1.0.0 Completed single-tuple-0.1.0.0 Starting list-tuple-0.1.0.0 Building list-tuple-0.1.0.0 Failed to install list-tuple-0.1.0.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/list-tuple-0.1.0.0-CjpJMaDhmDN95EgqJ3mZBK.log ): cabal: Entering directory '/tmp/cabal-tmp-7988/list-tuple-0.1.0.0' [1 of 1] Compiling Main ( /tmp/cabal-tmp-7988/list-tuple-0.1.0.0/dist/setup/setup.hs, /tmp/cabal-tmp-7988/list-tuple-0.1.0.0/dist/setup/Main.o ) Linking /tmp/cabal-tmp-7988/list-tuple-0.1.0.0/dist/setup/setup ... Configuring list-tuple-0.1.0.0... temporaly file: /tmp/list-tuple/List8527-0.hs template/List.hs: openFile: does not exist (No such file or directory) cabal: Leaving directory '/tmp/cabal-tmp-7988/list-tuple-0.1.0.0' cabal: Error: some packages failed to install: list-tuple-0.1.0.0-CjpJMaDhmDN95EgqJ3mZBK failed during the building phase. The exception was: ExitFailure 1