Re: [Haskell-cafe] Platform Versioning Policy: upper bounds are not our friends

On Thu, Aug 16, 2012 at 06:07:06PM -0400, Joey Adams wrote:

On Wed, Aug 15, 2012 at 3:38 PM, Bryan O'Sullivan wrote:

...

I propose that the sense of the recommendation around upper bounds in the PVP be reversed: upper bounds should be specified only when there is a known problem with a new version of a depended-upon package.

I, too, agree. Here is my assortment of thoughts on the matter.

Here's some bad news: with cabal 1.14 (released with Haskell Platform 2012.2), cabal init defaults to bounds like these:

build-depends: base ==4.5.*, bytestring ==0.9.*, http-types ==0.6.*

I'm not sure why you think this is "bad news". I designed this to conform exactly to the current PVP. If the PVP is changed then I will update cabal init to match. -Brent