This is definitely an issue with the array package not setting the right minimum versions. You should email the maintainer. On Aug 19, 2013 11:05 AM, "Ketil Malde" <ke...@malde.org> wrote:
> > I recently encountered the following problem: > > > -------------------------------------------------------------------------------- > $ cabal install > Resolving dependencies... > Configuring array-0.4.0.1... > Building array-0.4.0.1... > Preprocessing library array-0.4.0.1... > > Data/Array/IArray.hs:1:14: Unsupported extension: Trustworthy > cabal: Error: some packages failed to install: > array-0.4.0.1 failed during the building phase. The exception was: > ExitFailure 1 > asmeval-0 depends on array-0.4.0.1 which failed to install. > binary-0.7.1.0 depends on array-0.4.0.1 which failed to install. > biocore-0.3.1 depends on array-0.4.0.1 which failed to install. > biofasta-0.0.3 depends on array-0.4.0.1 which failed to install. > biopsl-0.4 depends on array-0.4.0.1 which failed to install. > biosff-0.3.3 depends on array-0.4.0.1 which failed to install. > bytestring-0.10.2.0 depends on array-0.4.0.1 which failed to install. > containers-0.5.2.1 depends on array-0.4.0.1 which failed to install. > deepseq-1.3.0.1 depends on array-0.4.0.1 which failed to install. > hashable-1.2.0.10 depends on array-0.4.0.1 which failed to install. > stringable-0.1.1 depends on array-0.4.0.1 which failed to install. > system-filepath-0.4.7 depends on array-0.4.0.1 which failed to install. > text-0.11.3.1 depends on array-0.4.0.1 which failed to install. > unordered-containers-0.2.3.1 depends on array-0.4.0.1 which failed to > install. > > -------------------------------------------------------------------------------- > > The installed GHC is 7.0.4, and yes, that's many major versions ago, but > then again, it's only two years old, and from what I understand, it is > shipped by some conservative Linux distributions. > > The problems here are that: > > a) the installation tries to install array, but current array requires > the "Trustworthy" extension, which appeared in 7.2.1. Ideally, packages > should try to be backwards compatible, e.g. by using conditional > sections. > > b) the output isn't very helpful in tracking down the cause of this > problem, it claims that all these packages depend on array-0.4.0.1, > which is a lie. Somewhere, somehow, somethings depends on this (or at > least a newer version), but I have no clue how to figure out which, > except examining each of these packages and their dependencies manually. > > It is also possible that array shouldn't be upgraded like this, but then > that needs to be made clear to cabal somehow, so that I don't spend ages > trying to. > > Are there any solutions to this? Advice on how to proceed? > > -k > -- > If I haven't seen further, it is by standing in the footprints of giants > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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