On Wed, Jul 18, 2012 at 11:29 AM, Ross Paterson <r...@soi.city.ac.uk> wrote: > On Wed, Jul 18, 2012 at 09:35:52AM +0100, Erik Hesselink wrote: >> I don't think you can install this package on 7.4. As Andres said, it >> requires containers 0.5, but ghc 7.4's base libraries (in this case, >> template-haskell) use containers 0.4, and can't be reinstalled. I >> guess your best bet is to use sbv-2.1, which depends on containers >= >> 0.3, or to unpack it and see if you can loosen the containers >> dependency and see if it still works with 0.4 > > I'm talking about unattended automated builds, so tweaking isn't an > option. On the other hand breaking the package environment isn't so bad, > because I'm throwing it away after each build.
We use --force-reinstalls for automated builds as well, inside a cabal-dev sandbox. I think that flag is a fine default for such situations. >> So in short, no combination of flags will work in this case, I think. >> Failure is the best option. > > Actually --force-reinstalls does work in this case, and this thread began > with Levent being unhappy with the failure option for his package, so > I'm tempted to use that flag on all hackage builds. Does that mean that you *can* reinstall template-haskell? I didn't know that... Erik _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
