[M3devel] conversion to another version control system

[Jay K]

 > I thought that monotone  was the preferred solutionMy "ressearch" (not really worth calling it that), suggests the following are good
options, roughly in this order:

 perforce ("p4") 
 mercurial ("hg") 
 git 
 monotone ("mtn")  
 subversion ("svn") 

 subversion doesn't do branching right, but for us it probably is good enough.
 Perforce is my favorite by far. I know very well how to use it and it works very well.
 I just could never find a hoster for it.

 svn's familiar centralized model might put it up at #2 after p4. 
 hg is said to be easier to use and understand than git.
 hg and git seems to be the running favorites of the distributed systems.
 mtn was rejected by Linus because it was too slow. It is better now and
   probably ok.
svn doesn't do branching right and isn't distibuted, but as I said, maybe #2.


It also pays to use the heavily used systems. They become the most
reliable. (Modula-3 not necessarily a counterexcample...)


 - Jay

----------------------------------------
> Date: Fri, 27 Aug 2010 15:38:37 -0400
> From: hendrik at topoi.pooq.com
> To: m3devel at elegosoft.com
> Subject: Re: [M3devel] conversion to another version control system
>
> On Fri, Aug 27, 2010 at 08:55:55PM +0200, Olaf Wagner wrote:
> > Quoting Tony Hosking :
> >
> >> cvs checkout gives you a checked out working directory not a repository.
> >> You'd need to *copy* the repository hierarchy verbatim.
> >
> > The CM3 repository is on birch.elegosoft.com:/usr/cvs
> > It contains CVSROOT and cm3 as CVS modules.
> > CVSROOT contains metainformation about the versions. You'll
> > probably need it for git conversion.
> >
> > You can get the whole repository via cvsup, rsync or scp. The last
> > two require an ssh account on birch.
> >
> > Olaf
> >
> > PS: I did mention that Peter Eiserloh is also working on a git
> > conversion of our history?
>
> No. From discussions half a year ago or longer, I thought that monotone
> was the preferred solution. Git is easier, I suppose, because no one
> has to write anything to feed git-fast-import into monotone. And
> a git-fast-import file would probably be the first step to get it into
> monotone anyway, since the direct cvs import I tried into monotone
> failed one of monotone's internal sanity checks.
>
> Perhaps this means I don't have to do the cvs2mtn stuff any more. Not
> for Modula 3, anyway. Though git2mtn might still be useful for others.
>
> -- hendrik
>
> >
> >> On 27 Aug 2010, at 14:09, hendrik at topoi.pooq.com wrote:
> >>
> >>> On Fri, Aug 27, 2010 at 01:35:02PM -0400, hendrik at topoi.pooq.com wrote:
> >>>> I was tinkering with a copy of the Modula 3 cvs repository I had made
> >>>> a few months ago using cvsup, seeing of cvs2git would make me a proper
> >>>> git-fast-import file. It complained that what I provided wasn't a valid
> >>>> CVS repository:
> >>>>
> >>>> ERROR: the path '/farhome/hendrik/newcm3/trywholecvs/cvs' is not a CVS
> >>>> repository, nor a path within a CVS repository. A CVS repository
> >>>> contains a CVSROOT directory within its root directory.
> >>>>
> >>>> Now I looked around, and couldn't find a CVSROOT directory anywhere
> >>>> except in /usr/lib/cvs, which is probably irrelevant.
> >>>>
> >>>> Is this a problem with cvs2git, a problem with the repository, or a
> >>>> problem with cvsup, or a problem with the way I used cvsup to copy the
> >>>> repository? Or would any regular cvs user know just exactly what to do?
> >>>
> >>> Should I perhaps just create an empty CVSROOT directory somewhere?
> >>>
> >>> In case it indicates what I did wrong, an ancient log indicates that
> >>> when I created the copy of the repository in the first place, I used the
> >>> commands
> >>>
> >>> cvs -d :pserver:anonymous at modula3.elegosoft.com:/usr/cvs login
> >>> cvs -d :pserver:anonymous at modula3.elegosoft.com:/usr/cvs checkout cm3
> >>>
> >>> -- hendrik
> >>
> >>
> >
> >
> >
> > --
> > Olaf Wagner -- elego Software Solutions GmbH
> > Gustav-Meyer-Allee 25 / Gebäude 12, 13355 Berlin, Germany
> > phone: +49 30 23 45 86 96 mobile: +49 177 2345 869 fax: +49 30 23 45 86 95
> > http://www.elegosoft.com | Geschäftsführer: Olaf Wagner | Sitz: Berlin
> > Handelregister: Amtsgericht Charlottenburg HRB 77719 | USt-IdNr: DE163214194
> >