[Haskell-cafe] A new cabal odissey: cabal-1.8 breaking its own
neck by updating its dependencies
ross at soi.city.ac.uk
Mon Sep 13 07:52:52 EDT 2010
On Sat, Sep 11, 2010 at 12:17:27PM -0700, Jason Dagit wrote:
> From the FAQ linked by Paolo:
> "To avoid this problem in the future, avoid upgrading core packages.
> The latest version of cabal-install has disabled the upgrade command
> to make it a bit harder for people to break their systems in this
It's not always possible. In particular, random-220.127.116.11 (shipped with
GHC 6.12.*) depends on the time package, of which more recent versions
have been released. That can trigger rebuilding of random-18.104.22.168,
and thus haskell98-22.214.171.124.
It might help if the release of random with GHC 7.0 had a tight dependency
on the version of the time package shipped with it. Maybe all the core
packages need tight dependencies.
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