Fix cspmcheckeri dependencies.

[PhilArmstrong]

Just trying out your csp checker & discovered that it won't build on Debian testing with the system libraries: had to install the latest haskeline by hand.

[tomgr]

Thanks! Just to clarify: is that because it fails to build with 0.6 and actually requires 0.7?

[PhilArmstrong]

That appears to be the case. It's possible that some 0.6 point release fixed the problem of course, I didn't bother bisecting the haskeline releases.

[PhilArmstrong]

The error with 0.6.4.7 was

$ cabal build
Building cspmchecker-0.2.1...
Preprocessing executable 'cspmcheckeri' for cspmchecker-0.2.1...
[2 of 2] Compiling Main             ( src/InteractiveChecker/Main.hs, dist/build/cspmcheckeri/cspmcheckeri-tmp/Main.o )

src/InteractiveChecker/Main.hs:51:44:
    No instance for (MonadException IChecker)
      arising from a use of `getInputLine'
    Possible fix:
      add an instance declaration for (MonadException IChecker)
    In the second argument of `handleSourceError', namely
      `(getInputLine (prompt ++ "> "))'
    In a stmt of a 'do' block:
      minput <- handleSourceError
                  (Just "") (getInputLine (prompt ++ "> "))
    In the expression:
      do { currentPath <- lift $ getState currentFilePath;
           let prompt = ...;
           minput <- handleSourceError
                       (Just "") (getInputLine (prompt ++ "> "));
           case minput of {
             Nothing -> return ()
             Just input -> do { ... } } }

[tomgr]

Thanks; that looks entirely plausible!