Warning: gnutls.cabal:36:21: version operators used. To use version operators
the package needs to specify at least 'cabal-version: >= 1.8'.
Warning: gnutls.cabal:39:26: version operators used. To use version operators
the package needs to specify at least 'cabal-version: >= 1.8'.
Configuring gnutls-0.2...
Error:
    The following packages are broken because other packages they depend on are missing. These broken packages must be rebuilt before they can be used.
installed package monads-tf-0.1.0.3 is broken due to missing package base-4.15.0.0

==> ERROR: A failure occurred in build().
    Aborting...