Re: Tags missing from GIT mirror? - Mailing list pgsql-hackers

From Peter Eisentraut
Subject Re: Tags missing from GIT mirror?
Date
Msg-id 1273735204.32172.2.camel@vanquo.pezone.net
Whole thread Raw
In response to Re: Tags missing from GIT mirror?  (Andrew Dunstan <andrew@dunslane.net>)
Responses Re: Tags missing from GIT mirror?
List pgsql-hackers
On ons, 2010-05-12 at 16:11 -0400, Andrew Dunstan wrote:
> Of course, we might also find some other brokenness if we try to import 
> all the tags. Also, be aware of this (from 
> <http://cvs2svn.tigris.org/cvs2git.html>):
> 
>     Differences between CVS and git branch/tag models: CVS allows a
>     branch or tag to be created from arbitrary combinations of source
>     revisions from multiple source branches. It even allows file
>     revisions that were never contemporaneous to be added to a single
>     branch/tag. Git, on the other hand, only allows the full source
>     tree, as it existed at some instant in the history, to be branched
>     or tagged as a unit. Moreover, the ancestry of a git revision makes
>     implications about the contents of that revision. This difference
>     means that it is fundamentally impossible to represent an arbitrary
>     CVS history in a git repository 100% faithfully. 

Right, and omitting tags was in fact one of the "features" of fromcvs
that made us use it, because any tool that tries to convert tags will
explode on our CVS tree, for reasons explained in the above paragraph.

We have also discussed this in more detail about three times before.




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