[isabelle-dev] Mercurial conversion relaunch

[Makarius]

After spurious dropouts of changesets in the incremental CVS -> Mercurial 
conversion I had to relaunch the whole process.  Within the next few hours 
http://isabelle.in.tum.de/repos/isabelle will recover to the present state 
of the CVS.  Since this is a fresh Mercurial repository, local clones 
probably need to be recreated from scratch.

Incremental repository conversion is not very stable.  Problems are likely 
to occur again in this intermediate situation where the old CVS is still 
in action.  Pretty soon we really need to step forward to using Mercurial 
exclusively, or stay with CVS indefinitely.

There are no technical problems to move on.  It is mainly a matter of more 
people getting acquinted with the current state-of-the art in version 
control.  As pointed out before, Mercurial is actually easier to use than 
old CVS/SVN, only the way of thinking needs to be updated a little.

The famous talk of Linus Torvalds about Git
http://de.youtube.com/watch?v=4XpnKHJAok8 might help to get into 
perspective.  (Please s/Git/Mercurial/g for whatever he says.)


	Makarius