But why it does not occur on other installation? And Albert, I did not directly install QuickCheck. It was required by yesod.
On Wed, Jul 11, 2012 at 10:55 PM, Brandon Allbery <allber...@gmail.com> wrote: > On Wed, Jul 11, 2012 at 5:28 AM, Magicloud Magiclouds > <magicloud.magiclo...@gmail.com> wrote: >> >> Even I removed all user space packages, the error was still. I think >> it is a ghc pkg problem, that every package register itself as >> package:function while ghc (or cabal?) required >> package-version:function. > > > That's not the problem, it's the symptom. Package symbols are always > versioned; ghc only shows the version when it's the only way to disambiguate > symbols. > > So when it shows you a conflict where one is versioned and the other isn't, > you have multiple versions of a package installed. > >> >> But --constraint='template-haskell-2.7.0.0' did make it compiled. > > > And that's how you prevent it. > > -- > brandon s allbery allber...@gmail.com > wandering unix systems administrator (available) (412) 475-9364 vm/sms > -- 竹密岂妨流水过 山高哪阻野云飞 And for G+, please use magiclouds#gmail.com. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
