On Mon, Apr 12, 2010 at 4:00 AM, Duncan Coutts <duncan.cou...@googlemail.com > wrote:
> On Sun, 2010-04-11 at 14:28 -0700, Jason Dagit wrote: > > > I've noticed another type of diamond dependency problem. Suppose I > > build and install Foo today and it depends on Bar 2.0.0. In a week, I > > install Bar 2.0.1. Next I installed Baz that also depends on Bar, and > > it gets Bar 2.0.1. When I install a package that depends on Foo, Baz, > > and possibly Bar, then cabal won't be able to figure out proper > > dependencies because Foo needs one version of Bar and Baz needs a > > different version. > > That's exactly the problem that cabal-install solves. It will rebuild > one or the other of Foo and Baz so that the dependency on Bar is > consistent. > Weird. This has not been my experience. Jason
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