Resolving dependencies...
Configuring strict-0.3.1...
Building strict-0.3.1...
Preprocessing library strict-0.3.1...

Data/Strict/Tuple.hs:17:16: Warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[1 of 5] Compiling System.IO.Strict ( System/IO/Strict.hs, dist/build/System/IO/Strict.o )

System/IO/Strict.hs:45:47: Not in scope: ‘length’
Failed to install strict-0.3.1
cabal: Error: some packages failed to install:
strict-0.3.1 failed during the building phase. The exception was:
ExitFailure 1