Here's one example, and a comment for a possible long-term solution from Duncan Coutts:
https://github.com/bos/aeson/issues/177 Best, Leon On Wed, Mar 12, 2014 at 1:55 PM, Andres Löh <and...@well-typed.com> wrote: > Hi there. > > > i'm repeatedly seeing many examples where a Manual : False flag is used > to > > encode an "OR" in the cabal configuration, and where cabal "gives up" on > > finding the "right" build plan i know it can find if it has to flip the > flag > > in a dependency its building... > > > > Is this a known issue? how can i mitigate it? > > It wasn't really known to me until recently. > > I'm currently looking at this issue, but I unfortunately don't have > much time to work on it. As a workaround, it might help to add a > package for which a suboptimal version is chosen because the flag is > set to the wrong value explicitly as a target on the command line. > > Cheers, > Andres > > -- > Andres Löh, Haskell Consultant > Well-Typed LLP, http://www.well-typed.com > _______________________________________________ > cabal-devel mailing list > cabal-devel@haskell.org > http://www.haskell.org/mailman/listinfo/cabal-devel >
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