Re: [Caml-list] [OSR] Ports-like package management system

["Bünzli Daniel" <daniel.buenzli@erratique.ch>]

Le 29 janv. 08 à 18:35, Berke Durak a écrit :

>> It would also be nice to have a set of versions of the various  
>> libraries that hang together, as GODI does.  Otherwise, problems in  
>> the case where there are packages A, B and C where A depends on B  
>> and C and B depends on C.  You need a version of C that works with  
>> your versions of A and B, or you're sunk.  So some central repo  
>> where you can maintain a set of "safe" versions would allow for a  
>> developer to ask for a easily pull a collection of working libraries.
>
> I recommend the use of a VCS precisely for that kind of thing:  to  
> be able to depend on an exact revision.

This won't solve the problem per se.

If you have :

A-v1 depends on C-v1
B-v1 depends on C-v2

You need a way to be able to tell A-v1 to use C-v2 (or B-v1 to use  C- 
v1). So that you can use both A-v1 and B-v1 toghether. In a  
distributed setting you need a way to override the dependencies and  
pray that it works and if it doesn't contact the A's developer to  
release a new version that works with C-v2.

Again this has nothing to do with the use of a vcs.

Daniel