[Haskell-cafe] managing local cabal package database

[Daniel Trstenjak]

Hi Carl,

> The solution, of course, is versioning, but I think 'add-source'
> doesn't help there anymore (right?), unless I copy the head to another
> directory and do the improvements there.

Assuming you have a git/svn/whatever repository for package X, then I
would most likely create a version 0.1 branch of package X and let
project A depend on version 0.1, and in the same way have a version
0.2 branch for project B.

This way you can't use the wrong branch of package X without
cabal yelling at you, that the desired version isn't available.

Yes, you would have two checkouts of package X, each one 
switched two the desired version.

Otherwise having your own Hackage server seems to be the only
way to have an automatic version resolution.


Greetings,
Daniel