You can just write a bash script that will do: cabal install --constraint='bar == v' for all the values of 'v' (0.1, 0.2, 1.2.5.1, ...) you are interested in. You can be aware of all the existing versions just using the directory listing in http://hackage.haskell.org/packages/archive/containers/ (for the 'containers' package in this case) or by using cabal-install cleverly maybe? I just saw 'cabal info containers' gives a list of available versions, up to a point... after which it says "(and 4 others)". So maybe go see how 'cabal info' does this? But all in all, this should give you enough to work out a nice solution. On Thu, Jul 4, 2013 at 12:56 PM, Daniel Díaz Casanueva < dhelta.diaz@gmail.com> wrote:
Hello everyone.
I would like to check what dependencies is one of my packages compatible with. For example, say I have a package called "foo" that depends on package "bar". Most likely, "foo" does not build with each version of "bar". What I want to do is try to build "foo" with each single version of "bar" (not manually).
What is the best approach to this?
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