#773: Default value for flag ignored, but explicit flag assignment is honored ----------------------------+----------------------------------------------- Reporter: guest | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: Cabal library | Version: 1.8.0.6 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ----------------------------+----------------------------------------------- Comment(by malcolm.wallace@…): This is not a bug, it is a design feature. The "default" value of a flag is only a hint to the constraint solver that it should try using that flag value first, before trying other values. If the constraint solver was unable to find a valid solution to the dependencies using your default value of "True", then it continues looking with the value "False", and then apparently does find a valid solution respecting all dependencies listed there. However, if you specify a flag value on the command-line, the constraint solver will not try using other values for flags: it trusts that the user really wants what they explicitly asked for. In your case, I think if you specify True for the value of the flag on the commandline, the solver will probably fail to find a solution, and tell you why. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/773#comment:1 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects