I am using ghc 7.4.2 which includes template-haskell-2.7.0.0. When I installed QuickCheck-2.5, it requires template-haskell-2.6.0.0. 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. But --constraint='template-haskell-2.7.0.0' did make it compiled.
On Wed, Jul 11, 2012 at 1:34 PM, Claude Heiland-Allen <cla...@mathr.co.uk> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > On 11/07/12 05:51, Magicloud Magiclouds wrote: >> I cleaned out everything, no luck.... >> >> On Fri, Jul 6, 2012 at 2:14 AM, Albert Y. C. Lai <tre...@vex.net> >> wrote: >>> On 12-07-03 04:19 AM, Magicloud Magiclouds wrote: >>>> template-haskell-2.6.0.0:Language.Haskell.TH differs from name >>>> found in the interface file >>>> template-haskell:Language.Haskell.TH > > You installed a bad template-haskell version. You can only use a > version corresponding to your ghc version. > > I had a similar problem recently. My solution process was as follows: > > 1. check which template-haskell version came with my ghc: > > $ ghc -V > The Glorious Glasgow Haskell Compilation System, version 7.4.2 > $ ghc-pkg list template-haskell > /home/claude/opt/lib/ghc-7.4.2/package.conf.d > template-haskell-2.7.0.0 > /home/claude/.ghc/x86_64-linux-7.4.2/package.conf.d > $ > > 2. make sure to forbid every other version of template-haskell > (because it will break horribly, as you found): > > $ cabal install --constraint='template-haskell==2.7.0.0' foo > > 3. if foo fails to install because it thinks it needs a different > version of template-haskell, try adjusting dependencies in foo.cabal > > 4. if foo installs and works with the adjusted dependencies, let the > maintainer know > >>> I think things are so messed up that it is time to clean out >>> everything. See my >>> http://www.vex.net/~trebla/haskell/sicp.xhtml#remove >>> >>> In fact, time to read the whole article and avoid unsafe >>> re-installs and "upgrades". > > It's a good read for sure! Perhaps it could be updated to add a > problem I ran into recently: > > "cabal install --solver=modular --avoid-reinstalls" sounds perfect, if > sicp.xhtml scared you properly. But excessively avoiding reinstalls > is bad, as cabal-install seems to install a different allowable > version instead. The result for me was horrible diamond dependency > problems - half my packages were built with one version of > mtl/transformers, and the other half with a different version of > mtl/transformers. > > When I then tried to ghci using some modules from both halves of my > installed packages, I got very very confusing type errors complaining > about almost-identical-looking types not being identical. > > > Claude > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > > iQEcBAEBAgAGBQJP/RBbAAoJEHZDo4jueIiW164IALlHcaauJX2AjBZTDExU0mKC > wlH+dIbaKkl8H1IMIXQnWSX0GxFGMsbPTdBXf/BC2CMXTcSJr8YMiyKewMAs734g > DijNU/x/nQlcVruOk1c8EAijIKs938vT3dF0j863+afMAA+cRWlyLWfV50Y7AIG6 > 4hF0Fr5Q73GwonFzTXuX+iWLxBL1i2jXgPjKJvNTJZr+iGn5txCj+6ZpJyfIXaaw > PZtQrnX/37vQ/ctbKsnDqRQI27/ENJyW3zm76Gax47EIpMvL8fHzEg8IpyR9/eR8 > 8ZfGKYNA1EsARHT3KS6pBPsVQdhn/qYInVZ5NYQ1r/kd9D6nqoy5pETdz3z/23Y= > =Rzob > -----END PGP SIGNATURE----- > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe -- 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
