Re: [Haskell-cafe] Hackage dependencies problem.

2012-11-20 Thread Albert Y. C. Lai

On 12-11-19 09:39 PM, Magicloud Magiclouds wrote:

And, the key point is that using upgrade-dependencies with
cabal-install. I am using git (current) version of cabal-install.
Without that argument, things could be fine. With it, it must fail.


Therefore, don't use upgrade-dependencies.

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Re: [Haskell-cafe] Hackage dependencies problem.

2012-11-19 Thread Ivan Lazar Miljenovic
On 19 November 2012 18:21, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
 Hi,
   I am having ghc 7.6.1 working here. But anytime I installed something with
 cabal-install, I got prompts like:

 Warning: The following packages are likely to be broken by the reinstalls:
 haskell98-2.0.0.2
 ghc-7.6.1
 Cabal-1.16.0
 bin-package-db-0.0.0.0
 directory-1.2.0.0
 hpc-0.6.0.0
 Continuing even though the plan contains dangerous reinstalls.

   And even worse, then I got:

 command line: cannot satisfy -package Cabal-1.16.0:
 Cabal-1.16.0-dd0ce1db6fea670a788547ee85411486 is unusable due to missing
 or recursive dependencies:
   directory-1.2.0.0-8edf300597b0da609c8eccc9aa6d0cc3
 process-1.1.0.2-03ae5757aa509ffbe497f42660cba52c
 unix-2.6.0.0-4bc27fc415f60036a88211de7cde3e9a
 (use -v for more information)

   What should I do? Why user space directory and process would interrupt
 Cabal in global space?

It shouldn't.

Can you please give an example of a package that gives you an error like this?

Also, what does ghc-pkg check say?

The only thing I can think of is that you're trying to upgrade a
package like array, containers, etc.

 --
 竹密岂妨流水过
 山高哪阻野云飞

 And for G+, please use magiclouds#gmail.com.

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-- 
Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com
http://IvanMiljenovic.wordpress.com

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Re: [Haskell-cafe] Hackage dependencies problem.

2012-11-19 Thread Albert Y. C. Lai

On 12-11-19 04:45 AM, Ivan Lazar Miljenovic wrote:

On 19 November 2012 18:21, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:

command line: cannot satisfy -package Cabal-1.16.0:
 Cabal-1.16.0-dd0ce1db6fea670a788547ee85411486 is unusable due to missing
or recursive dependencies:
   directory-1.2.0.0-8edf300597b0da609c8eccc9aa6d0cc3
process-1.1.0.2-03ae5757aa509ffbe497f42660cba52c
unix-2.6.0.0-4bc27fc415f60036a88211de7cde3e9a
 (use -v for more information)

   What should I do? Why user space directory and process would interrupt
Cabal in global space?


It shouldn't.

Can you please give an example of a package that gives you an error like this?

Also, what does ghc-pkg check say?

The only thing I can think of is that you're trying to upgrade a
package like array, containers, etc.


It does. It has always been. When unioning user and global, user takes 
precedence: user directory-1.2.0.0 shadows global directory-1.2.0.0 (GHC 
User's Guide 4.9.4). But look closer: user directory-1.2.0.0-feedbabe... 
shadows global directory-1.2.0.0-deadbeef... Therefore, if global 
Cabal-1.16.0 was built against directory-1.2.0.0-deadbeef..., it's a 
missing dependency for you.


See my http://www.vex.net/~trebla/haskell/sicp.xhtml#pigeon

Fortunately, shadowing is a sessional property, not a data-loss 
property. One can say, it's a data-surplus property. To regain working 
sessions, cut surplus data, add -no-user-package-db to all your ghc and 
ghci commands.


ghc-pkg check does not report shadowing. Go straight for ghc -v.

This is what you get for --reinstall.

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Re: [Haskell-cafe] Hackage dependencies problem.

2012-11-19 Thread Magicloud Magiclouds
Not only shadowing.
For example, when I installed warp-static, yesod, or gtk2hs. A
clear-user-space may ease the problem and got them installed. But normally
with a not brand new user space, it failed like above.
And, the key point is that using upgrade-dependencies with cabal-install. I
am using git (current) version of cabal-install. Without that argument,
things could be fine. With it, it must fail.
And ghc-pkg check reports no errors.


On Tue, Nov 20, 2012 at 3:47 AM, Albert Y. C. Lai tre...@vex.net wrote:

 On 12-11-19 04:45 AM, Ivan Lazar Miljenovic wrote:

 On 19 November 2012 18:21, Magicloud Magiclouds
 magicloud.magiclouds@gmail.**com magicloud.magiclo...@gmail.com
 wrote:

 command line: cannot satisfy -package Cabal-1.16.0:
  Cabal-1.16.0-**dd0ce1db6fea670a788547ee854114**86 is unusable due
 to missing
 or recursive dependencies:
directory-1.2.0.0-**8edf300597b0da609c8eccc9aa6d0c**c3
 process-1.1.0.2-**03ae5757aa509ffbe497f42660cba5**2c
 unix-2.6.0.0-**4bc27fc415f60036a88211de7cde3e**9a
  (use -v for more information)

What should I do? Why user space directory and process would interrupt
 Cabal in global space?


 It shouldn't.

 Can you please give an example of a package that gives you an error like
 this?

 Also, what does ghc-pkg check say?

 The only thing I can think of is that you're trying to upgrade a
 package like array, containers, etc.


 It does. It has always been. When unioning user and global, user takes
 precedence: user directory-1.2.0.0 shadows global directory-1.2.0.0 (GHC
 User's Guide 4.9.4). But look closer: user directory-1.2.0.0-feedbabe...
 shadows global directory-1.2.0.0-deadbeef... Therefore, if global
 Cabal-1.16.0 was built against directory-1.2.0.0-deadbeef..., it's a
 missing dependency for you.

 See my 
 http://www.vex.net/~trebla/**haskell/sicp.xhtml#pigeonhttp://www.vex.net/~trebla/haskell/sicp.xhtml#pigeon

 Fortunately, shadowing is a sessional property, not a data-loss property.
 One can say, it's a data-surplus property. To regain working sessions, cut
 surplus data, add -no-user-package-db to all your ghc and ghci commands.

 ghc-pkg check does not report shadowing. Go straight for ghc -v.

 This is what you get for --reinstall.


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-- 
竹密岂妨流水过
山高哪阻野云飞

And for G+, please use magiclouds#gmail.com.
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