Don't haskell packages have a jailbreak mechanism to ignore too-strict upper bounds?

> On Jan 25, 2014, at 6:28, Oliver Charles <notifications@github.com> wrote:
> 
> In pkgs/development/libraries/haskell/haskell-names/default.nix:
> 
> > @@ -25,4 +25,5 @@ cabal.mkDerivation (self: {
> >      platforms = self.ghc.meta.platforms;
> >      maintainers = [ self.stdenv.lib.maintainers.ocharles ];
> >    };
> > +  doCheck = false;
> Tests have an upper bound on PrettyShow that is lower than the current version in nixpkgs.
> 
> —
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