Resolving dependencies...
Configuring hwsl2-0.1.0.0...
Building hwsl2-0.1.0.0...
Preprocessing library hwsl2-0.1.0.0...
[1 of 1] Compiling Data.Hash.SL2    ( src/Data/Hash/SL2.hs, dist/build/Data/Hash/SL2.o )

src/tillich-zemor.c:1:27:
     fatal error: tillich-zemor.h: No such file or directory
     #include "tillich-zemor.h"
                               ^
compilation terminated.
Failed to install hwsl2-0.1.0.0
cabal: Error: some packages failed to install:
hwsl2-0.1.0.0 failed during the building phase. The exception was:
ExitFailure 1