Re: Dependencies/backwards compatibility in Hackage

Björn Bringert wrote:

Sven Moritz Hallberg wrote:

...

Björn Bringert , 2007-02-01 15.36 +0100:

...

Ross Paterson wrote: I think that the correct solution to this problem would be to make a new release of haxr (which used to be XmlRpc) that works with HaXml 1.17.

But then what is your answer to the problem of things breaking in the time between the release of HaXml 1.17 and making a new release of haxr?

-Sven

I don't really have one, expect fast development :-).

One possibility would be to have a convention about version number changes when libraries make backwards-incompatible API changes. E.g. HaXml should change major version whenever a change would break something that depends on it. Then all libraries which depend on HaXml could specify:

Build-depends: HaXml >= 1.13 && < 2

or something like that. The only problem would be that it would be overly restrictive if a HaXml 2.0 comes out that the current version of the depending library actually works with.

Eh that is what Ross already said. Sorry about that. This is the approach taken by Unix shared libraries by the way. /Björn