Dear list,
I'm trying to create unboxed REPA array from unboxed Vector, but I keep getting this type error: ghci> :m + Data.Array.Repa ghci> :m + Data.Array.Repa.Repr.Unboxed ghci> :m + Data.Vector.Unboxed ghci> fromUnboxed Z (Data.Vector.Unboxed.singleton 1) <interactive>:5:16: Couldn't match expected type `vector-0.9.1:Data.Vector.Unboxed.Base.Vector e0' with actual type `Data.Vector.Unboxed.Vector a0' In the return type of a call of `Data.Vector.Unboxed.singleton' In the second argument of `fromUnboxed', namely `(Data.Vector.Unboxed.singleton 1)' In the expression: fromUnboxed Z (Data.Vector.Unboxed.singleton 1) I am confused, because REPA documentation lists Vector from Data.Vector.Unboxed package as its second parameter. Why am I getting this error? I have Repa 3.2 an vector 0.9.1. Janek _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
On 4 October 2012 20:50, Janek S. <[hidden email]> wrote:
> Dear list, > > I'm trying to create unboxed REPA array from unboxed Vector, but I keep getting this type error: > > ghci> :m + Data.Array.Repa > ghci> :m + Data.Array.Repa.Repr.Unboxed > ghci> :m + Data.Vector.Unboxed > ghci> fromUnboxed Z (Data.Vector.Unboxed.singleton 1) > > <interactive>:5:16: > Couldn't match expected type `vector-0.9.1:Data.Vector.Unboxed.Base.Vector > e0' > with actual type `Data.Vector.Unboxed.Vector a0' > In the return type of a call of `Data.Vector.Unboxed.singleton' > In the second argument of `fromUnboxed', namely > `(Data.Vector.Unboxed.singleton 1)' > In the expression: fromUnboxed Z (Data.Vector.Unboxed.singleton 1) This makes it look like you've got two versions of vector installed, with Repa built against the version that _isn't_ 0.9.1. > > I am confused, because REPA documentation lists Vector from Data.Vector.Unboxed package as its > second parameter. Why am I getting this error? I have Repa 3.2 an vector 0.9.1. > > Janek > > _______________________________________________ > Haskell-Cafe mailing list > [hidden email] > http://www.haskell.org/mailman/listinfo/haskell-cafe -- Ivan Lazar Miljenovic [hidden email] http://IvanMiljenovic.wordpress.com _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
In reply to this post by Janek S.
Thanks!
> This makes it look like you've got two versions of vector installed, This is true, I have vector-0.9.1 and vector-0.10, but > with Repa built against the version that _isn't_ 0.9.1. this, I think, is not exactly correct: [root@GLaDOS : /dane/download] ghc-pkg field repa depends depends: QuickCheck-2.4.2-41cb2884cc20cd78948de62849bd9667 base-4.5.0.0-6db966b4cf8c1a91188e66d354ba065e bytestring-0.9.2.1-18f26186028d7c0e92e78edc9071d376 ghc-prim-0.2.0.0-c2ff696e5b8ec4d4b2bc2e42085fe471 template-haskell-2.7.0.0-133c0fdb189e05de22bd926d39f99fe3 vector-0.9.1-04dd5c58c224b03a4dc90091cf93a01d So Repa is build againts 0.9.1. Everything works when I do "ghc-pkg hide vector-0.10.0". Is there a way to tell GHCi which version of library it should load? I tried -XPackageImports but it doesn't allow to specify version of a package, only its name (or I don't know how to specify version). Jan _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
On Thu, Oct 4, 2012 at 1:58 PM, Janek S. <[hidden email]> wrote:
> Thanks! > >> This makes it look like you've got two versions of vector installed, > This is true, I have vector-0.9.1 and vector-0.10, but >> with Repa built against the version that _isn't_ 0.9.1. No, no, Repa is build against 0.9.1 since vector-0.9.1 appears in the _expected_ type, that is the type expected by the environment of the expression, here that's fromUnboxed which comes from the Repa library, so if it's waiting for a Vector from vector-0.9.1 it means Repa is built against this version (which is not the latest on your computer thus the problem). -- Jedaï _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
> so if it's waiting for a Vector from vector-0.9.1 it means Repa is
> built against this version (which is not the latest on your computer > thus the problem). Yes, as I said the latest one is 0.10. Is there any way to sensibly manage this kind of dependencies (sensibly = without hidding packages manually). Jan _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
Hello! Perhaps package imports would do the trick? http://haskell.org/ghc/docs/latest/html/users_guide/syntax-extns.html#package-imports Not exactly something you'd want to release in a module in a hackage package, though. -Michael On Oct 4, 2012 7:07 AM, "Janek S." <[hidden email]> wrote:
> so if it's waiting for a Vector from vector-0.9.1 it means Repa is _______________________________________________ Haskell-Cafe mailing list [hidden email] http://www.haskell.org/mailman/listinfo/haskell-cafe |
Free forum by Nabble | Edit this page |