[TUHS] [SPAM] Re: SCCS
lm at mcvoy.com
Sat Sep 14 11:55:17 AEST 2019
On Sat, Sep 14, 2019 at 01:03:12AM +0200, Steffen Nurpmeso wrote:
> He is as convinced from SCCS and its interleaved deltas as you
> are, but he works on extending the plain original SCCS, which is
> pretty smaller; his presentation from the "Chemnitzer Linux Tage
> 2012" (linux days of former Karl-Marx-Stadt)  talks about this
> and also prominently mentions BitKeeper:
> . All modern distributed OSS version control systems base upon
> BitKeeper in the end.
Sort of. Monotone, Darcs, and one other one I can't remember did not
draw from BitKeeper. Mercurial, Git, and the Australian one that I
can't remember definitely do.
> . BitKeeper bases upon the ideas of TeamWare.
Only in that I am the primary author of both. It does support the idea
that SCCS is the basis for both, though Teamware used the real SCCS and
I rewrote SCCS from scratch and then extended it quite a bit. BitKeeper's
SCCS tracks a lot more than SCCS does, pathnames, permissions, hostnames,
> . TeamWare bases upon the ideas of NSE.
That's absolutely false. TeamWare, which is the productized version
of NSElite, which I wrote all of, was a reaction to how absolute shiite
NSE was. I had friends in the Sun kernel group that quit because they
were forced to use NSE. It was awful. I got into source management
because I was well known at Sun as the guy that could fix performance
problems so I was asked to look at NSE. One look told me that I couldn't
fix NSE but the source management problem space needed some help.
> . NSE is a frontend to SCCS.
> . Therewith all modern systems ultimately base upon SCCS.
That is a big stretch, it's just not true. I love the SCCS file
format but to say all modern systems are based on SCCS is 100%
false. BitKeeper is. That's it.
> . Distributed operate TeamWare, BitKeeper, git, Mercurial.
Git and Mercurial were going for append only data structures.
That's not SCCS.
All this comes from Jorg, isn't he the guy who has a track record of
being on the outside of Sun and trying to argue with me about what Sun
was doing when I was a well known guy in the most important group at Sun,
the kernel group. If so, I'd salt his stuff heavily.
I think he means well but is a little out there. Though some people
might say the same about me.
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