Hi, I maintain the Haskell package HLint. HLint depends on haskell-src-exts, cpphs, hscolour and uniplate, plus things which are shipped with GHC. For each of the external library dependencies, I have to specify a version constraint. For example, I developed HLint against cpphs-1.10 so I can write one of: 1) cpphs == 1.10.* 2) cpphs >= 1.10 I know (1) works, since I've tested it. However, every time I use (1) some distro (usually Arch) emails me to say they need wider ranges so they can get all their packages consistent. I then usually flip to (2). Then, sometime later, someone releases a new version of cpphs that changes the interface in a way that breaks HLint, and I get emails from users, and tend to go back to (1). Flip flopping between version constraints isn't a great idea. What should I do? Alternatively, if I could sign up to be emailed when something went wrong, I'd happily fix it. i.e. I'd like an email either when my package fails to compile against the latest version of all packages but within my constrained range, or when the latest version falls outside my constraint range. Thanks, Neil