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[~]% cabal install strict-concurrency --constraint="base==4.*"       [rryan@free-radical]
Resolving dependencies...
Configuring strict-concurrency-0.2.3...
Preprocessing library strict-concurrency-0.2.3...
Building strict-concurrency-0.2.3...

Control/Concurrent/MVar/Strict.hs:46:7:
    Could not find module `Control.OldException':
      it is a member of the hidden package `base'
      Use -v to see a list of the files searched for.
cabal: Error: some packages failed to install:
strict-concurrency-0.2.3 failed during the building phase. The exception was:
exit: ExitFailure 1