On 15/07/2009 17:03, Mathias Stearn wrote:
Would it be possible for the language to require that implementations support linking multiple versions of packages (at least base and haskell-std) into a single running instance? That would solve the issue of using two libs that depend on different versions.
The language definition says nothing about packages. As far as the Haskell standard is concerned, a Haskell program is just a collection of modules, including the Prelude. I'm fairly keen to keep things simple like this. The packaging system can be explained, without modifying the language standard, as a transformation on module names (e.g. prefixing each module name with an identifier representing the package instance it comes from). Cheers, Simon