+1 Cheers, Edward
Excerpts from Johan Tibell's message of Wed Aug 29 21:33:44 -0400 2012: > Hi all, > > After reading the Safe Haskell paper today, I got the impression that > no one actually wants the .Safe modules currently in vector. If vector > was to be made Safe Haskell friendly, we should instead add .Unsafe > modules (and have the rest of the modules declared Trustworthy). > Having .Unsafe modules is better than having .Safe modules, because > > * there are many more safe functions than unsafe functions, and > * Haskell is by default safe, so having modules called .Safe is a bit > like having modules called .Pure. There's precedence for having > .Unsafe modules in e.g. bytestring. > > If that's the case, and if Roman agrees, I suggest we release a new > major version that > > * removes all the .Safe modules [1], > * adds new .Unsafe modules, and > * marks the functions that are now exported through the .Unsafe > modules deprecated in their original (non-.Unsafe) location. > > I suggest that the deprecation doesn't involve an actual deprecation > pragma in this release [2], but instead just a comment. A future major > release could add the deprecation pragma and another major release > after that could remove the actual functions. > > Actually removing functions causes huge Hackage churn so I suggest > that we don't do that until the new .Unsafe modules have been around > for a long time. > > 1. Normally I would suggest a deprecation period before removing > functions from an API, but I just searched through all of Hackage and > there's only a single package (bitvec) that makes use of the .Safe API > > 2. While deprecation pragmas sound good in theory there isn't much > library authors can do to make the warning go away. An author can > migrate to the new API, but in practice authors need to support a > couple of releases of each library. > > Cheers, > Johan > _______________________________________________ Haskell-platform mailing list Haskell-platform@projects.haskell.org http://projects.haskell.org/cgi-bin/mailman/listinfo/haskell-platform
