Resolving dependencies... Configuring extensible-exceptions-0.1.1.4... Configuring ghc-paths-0.1.0.9... Building extensible-exceptions-0.1.1.4... Installed extensible-exceptions-0.1.1.4 Configuring parallel-3.2.1.0... Building parallel-3.2.1.0... Building ghc-paths-0.1.0.9... Configuring mtl-2.2.1... Installed parallel-3.2.1.0 Building mtl-2.2.1... Configuring primitive-0.6.1.0... Installed ghc-paths-0.1.0.9 Building primitive-0.6.1.0... Configuring random-1.1... Installed mtl-2.2.1 Building random-1.1... Configuring text-1.2.2.1... Installed primitive-0.6.1.0 Building text-1.2.2.1... Installed random-1.1 Configuring strict-io-0.1... Building strict-io-0.1... Configuring regex-base-0.93.2... Failed to install strict-io-0.1 Build log ( /home/builder/.cabal/logs/strict-io-0.1.log ): cabal: Entering directory '/tmp/cabal-tmp-1821/strict-io-0.1' Configuring strict-io-0.1... Building strict-io-0.1... Preprocessing library strict-io-0.1... [1 of 3] Compiling System.IO.Strict.Internals ( System/IO/Strict/Internals.hs, dist/build/System/IO/Strict/Internals.o ) System/IO/Strict/Internals.hs:59:13: error: Variable not in scope: rnf :: sa -> t1 System/IO/Strict/Internals.hs:69:30: error: Variable not in scope: rnf :: sa -> t0 cabal: Leaving directory '/tmp/cabal-tmp-1821/strict-io-0.1' Building regex-base-0.93.2... Configuring vector-0.11.0.0... Installed regex-base-0.93.2 Building vector-0.11.0.0... Configuring regex-posix-0.95.2... Installed text-1.2.2.1 Building regex-posix-0.95.2... Installed regex-posix-0.95.2 Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Configuring parsec-3.1.11... Installed hashable-1.2.4.0 Building parsec-3.1.11... Configuring unordered-containers-0.2.7.1... Installed parsec-3.1.11 Configuring regex-tdfa-1.2.2... Installed vector-0.11.0.0 Building unordered-containers-0.2.7.1... Building regex-tdfa-1.2.2... Installed unordered-containers-0.2.7.1 Installed regex-tdfa-1.2.2 Configuring egison-3.6.3... Building egison-3.6.3... Installed egison-3.6.3 cabal: Error: some packages failed to install: egison-tutorial-3.5.0 depends on strict-io-0.1 which failed to install. strict-io-0.1 failed during the building phase. The exception was: ExitFailure 1