On Thu, Dec 16, 2010 at 10:08:23AM +0000, Johannes Waldmann wrote:
But: I'm always puzzled by build-dependencies like "A <= 3.4.5". With the "major.minor.release" scheme, a change in "release" means no API change (just bugfix), in "minor" means compatible extension of API, and only "major" changes can break the API.
According to the official Haskell package versioning policy [1], given A.B.C it is only B that must change when breaking the API, and C must change when extending the API. If you download a package and it builds with newer versions of some packages than it says it allows, you ought to notify the maintainer so they can upload a new version with updated version constraints. -Brent [1] http://www.haskell.org/haskellwiki/Package_versioning_policy