Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring z3-4.1.0...
Failed to install z3-4.1.0
Build log ( /home/builder/.cabal/logs/z3-4.1.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-12898/z3-4.1.0'
Configuring z3-4.1.0...
cabal: Missing dependency on a foreign library:
* Missing (or bad) header file: z3.h
* Missing C library: z3
This problem can usually be solved by installing the system package that
provides this library (you may need the "-dev" version). If the library is
already installed but in a non-standard location then you can use the flags
--extra-include-dirs= and --extra-lib-dirs= to specify where it is.
If the header file does exist, it may contain errors that are caught by the C
compiler at the preprocessing stage. In this case you can re-run configure
with the verbosity flag -v3 to see the error messages.
cabal: Leaving directory '/tmp/cabal-tmp-12898/z3-4.1.0'
cabal: Error: some packages failed to install:
z3-4.1.0 failed during the configure step. The exception was:
ExitFailure 1
z3-encoding-0.3.0.0 depends on z3-4.1.0 which failed to install.