Resolving dependencies...
Configuring bits-extras-0.1.3...
Building bits-extras-0.1.3...
Preprocessing library bits-extras-0.1.3...
[1 of 1] Compiling Data.Bits.Extras ( Data/Bits/Extras.hs, dist/build/Data/Bits/Extras.o )

cbits/bitops-gcc.c:1:0:
     error: CPU you selected does not support x86-64 instruction set
Failed to install bits-extras-0.1.3
cabal: Error: some packages failed to install:
bits-extras-0.1.3 failed during the building phase. The exception was:
ExitFailure 1
intset-0.1.0.0 depends on bits-extras-0.1.3 which failed to install.