Solver can automatically suggest changes when there is an unresolvable conflict #1616
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Makes sense! #1593 is also relevant, as otherwise you can't really select just the cabal files that are needed. Might be good to provide the commandline options along with the suggestion. |
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When there is an unresolved conflict among the dependencies of multiple source packages then remove one of the conflicting packages and then retry. The package chosen to be removed is the one which is on top of the dependency pyramid i.e. noone else depends on it. The functionality is not yet complete. It will be complete once cabal output is parsed and the list of conflicting packages is fed to the upper level logic. See commercialhaskell#1616
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See #1583 (comment).
We can automatically determine the minimal number of user packages to remove to be able to come up with a workable build plan. We can do this automatically when init/solver is used with
--forceand write the removed packages commented out in the config with an appropriate conflict reason comment. This allow diagnosing and fixing dependency problems quickly.This will perhaps depend on #1615 .
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