On Thu, 2009-09-10 at 20:15 +0100, Malcolm.Wallace@cs.york.ac.uk wrote:
Thu Sep 10 20:09:12 BST 2009 Malcolm.Wallace@cs.york.ac.uk * Fix the version-range parser to allow arbitrary expressions over constraints. Previously, only a single conjunction (&&) or disjunction (||) was parseable, despite an internal representation that permits arbitrary combinations. Now, any sequence of (&&) and (||) combining forms is parsed. (&&) binds more tightly than (||).
Thanks Malcolm, this is good. The only extra thing we need is a check in Distribution.PackageDescription.Check to make sure that if you're using the more general syntax that the .cabal file specify "cabal-version: >= 1.8". It should be fairly straightforward to do that since we just look at all the VersionRange expressions in the GenericPackageDescription (and it must be the GenericPackageDescription not the flattened PackageDescription) and see if any are using the more general expression forms. Duncan