Error while installing new packages with GHC 7.4.1
mail at antoras.de
Thu Mar 1 17:43:34 CET 2012
Ok, interesting info. But how to solve the problem now? Should I contact
the author of Hoogle and ask him about how solving this?
On 03/01/2012 02:02 AM, Albert Y. C. Lai wrote:
> On 12-02-29 06:04 AM, Antoras wrote:
>> I don't know where the dependency to array-0.3.0.3 comes from. Is it
>> possible to get more info from cabal than -v?
> hoogle-4.2.8 has "Cabal >= 1.8 && < 1.13", this brings in Cabal-1.12.0.
> Cabal-1.12.0 has "array >= 0.1 && < 0.4", this brings in array-0.3.0.3.
> It is a mess to have 2nd instances of libraries that already come with
> GHC, unless you are an expert in knowing and avoiding the treacherous
> consequences. See my
> It is possible to fish the output of "cabal install --dry-run -v3
> hoogle" for why array-0.3.0.3 is brought in. It really is fishing,
> since the output is copious and of low information density. Chinese
> idiom: needle in ocean (haystack is too easy). Example:
> "selecting hoogle-4.2.8 (hackage) and discarding Cabal-1.1.6, 1.2.1,
> 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52,
> 1.14.0, blaze-builder-0.1, case-insensitive-0.1,"
> We see that selecting hoogle-4.2.8 causes ruling out Cabal 1.14.0
> Similarly, the line for "selecting Cabal-1.12.0" mentions ruling out
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