Darcs is a free, open source revision control system written in
Haskell.

This requires ghc, haskell-primitive, haskell-vector, haskell-random,
haskell-transformers, haskell-syb, haskell-dataenc, haskell-mmap,
haskell-zlib, haskell-terminfo, haskell-utf8-string, haskell-html,
haskell-tar, haskell-mtl, haskell-text, haskell-parsec,
haskell-hashed-storage, haskell-haskeline, haskell-regex-base,
haskell-network, haskell-regex-posix, haskell-HTTP, and
haskell-regex-compat.

To run the test suite, additionally haskell-HUnit,
haskell-ansi-terminal, haskell-hostname, haskell-xml,
haskell-ansi-wl-pprint, haskell-QuickCheck, haskell-test-framework,
haskell-test-framework-hunit, and haskell-test-framework-quickcheck2
are required.

After uninstalling, run this command to unregister the package from
the ghc package database:   ghc-pkg recache