Parsec as a Dependency?

[Thomas Schilling]

Hi Caballers,

now that .cabal files are getting a more complex syntax (due to
configurations), I'd really like to use Parsec instead of lots of
hand-written and hard to maintain parsing code.  By getting rid of
ReadP-based field parsing, we'd also get proper error messages for
field values.

At the Parsec homepage I says that it's now included by default in
GHC, Hugs and NHC, so it'll most likely be present on any sufficiently
recent system.

What would be arguments against this proposal?

/ Thomas