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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