Re: propose: all arch move into a separate dir

On Sun, Mar 07, 2010 at 02:49:04PM -0700, M. Warner Losh wrote:
> In message: <20100307054423.GE70613_at_dragon.NUXI.org>
>             "David O'Brien" <obrien_at_freebsd.org> writes:
> : On Fri, Mar 05, 2010 at 09:41:40AM +0000, Robert Watson wrote:
> : > On Fri, 5 Mar 2010, Poul-Henning Kamp wrote:
> : >> In message <alpine.BSF.2.00.1003050912340.5181_at_fledge.watson.org>, Robert 
> : >> Watso n writes:
> : >>> Doing that kind of rearrangement [...] would be a nightmare for anyone 
> : >>> with large [...] patches, so I'd say we could pretty much rule that out 
> : >>> outright.
> : >> 
> : >> I would say that we should do it occasionally, to encourage these
> : >> FreeBSD users to contribute as many of their local changes back to
> : >> the project, as possible :-)
> : > 
> : > Absolutely -- and rearranging a tree is a good way to invalidate
> : > all those patches as well :-).
> : 
> : No, not it isn't.  Provide a script to convert path's in the diff.
> : This is what $LARGE_FREEBSD_USER did when it rearranged it source tree.
> 
> You are joking, right?  This would be a nightmare for people that
> integrate early and often.


No I am not joking.  I was responding to the point that a large patch
(that is a the output of running '$SCM diff') can be easily modified to
match a new directory layout.  Thus patches in GNATS aren't "useless".


I'm not sure what operation you are specifically speaking to . But, if
FreeBSD were to move the CPU directories under 'arch/', at $WORK we would
do:

    cd sys
    mkdir arch
    svn add arch
    svn mv {list of dirs} arch
    svn ci

and be done with it.  Branches would merge that change - get a trivial
tree conflict, resolve it - and move on with life.

I would expect folks working in project branches to do the same.

For merging changes from FreeBSD HEAD to FreeBSD stable - that is
trivial:

    cd sys
    svn merge -c $GRN ^/head/sys/arch/amd64 amd64
    svn ci

Subversion makes this a lot easier than CVS did.

-- 
-- David  (obrien_at_FreeBSD.org)