Thu Nov 12 05:51:20 PST 2009 Simon Marlow <marlo...@gmail.com>
* Fix bug when the combined package DB has duplicate package IDs
Ignore-this: ed917f06ffbf873ca80a4cf92f270728
Someone on IRC reported that they were encountering a strange missing
module error from GHC, and it turned out that they had mtl-1.1.0.2
installed in both the global and local DB, with the same
InstalledPackageId. The two packages should be interchangeable, but
we were forgetting to eliminate duplicates in part of the
package-processing phase in GHC.
Really I should switch this code over to use the new PackageIndex data
type in Cabal, which ought to make things simpler.
M ./compiler/main/Packages.lhs -4 +12
View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20091112135120-12142-da9e168ae75790c4e2b8b3e0ec2e6df93eba974b.gz
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