Error while installing new packages with GHC 7.4.1
ndmitchell at gmail.com
Thu Mar 1 18:02:58 CET 2012
The darcs version of Hoogle has had a more permissive dependency for a few
weeks. Had I realised the dependency caused problems I'd have released a
new version immediately! As it stands, I'll release a new version in about
4 hours. If you can't wait that long, try darcs get
On Thursday, March 1, 2012, Antoras wrote:
> 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,
>> 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168,
>> 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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