Use of xz instead of gzip

[Julian H. Stacey]

Hi,
Reference:
> From:		Chris Rees <utisoft at gmail.com> 
> Date:		Wed, 10 Aug 2011 14:17:01 +0100 
> Message-id:	<CADLo839=-Wc6cohQ24otOjFN-_jw9CfAjfJt5eJGeS85RU=V0A at mail.gmail.com> 

Chris Rees wrote:
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> On 10 Aug 2011 13:53, "Julian H. Stacey" <jhs at berklix.com> wrote:
> >
> > > I can see this presenting a problem on 7.x (and earlier, but they are
> > > no longer supported) because the base system shouldn't have dependencies
> > > on ports.  The options would seem to be:
> > > 1) Stick with gzip for 7-src and earlier (as well as ports until 7.x
> > >    goes EOL)
> >
> > (Not that I'm suggesting for or against Option 1, but it needs modifying,
> > Applying the same logic, append to Option 1: "as well as cvs-cur"
> >        (as cvs can be used to extract eg 4 & ports & doc as well as head).
> > As the ctm collection comprises:
> >         cvs-cur ports-cur src-4 src-5 src-6 src-7 src-8 src-cur
> > Option 1 thus becomes "Stick with gzip for all except src-8 & src-cur"
> >
> > Whether a CTM src-stable stream is EOL is irrelevant.
> > All that matters is whether extractor hosts have xz or not.
> >  One does not need to run ctm on same `uname -r` as one extracts for,
> > eg my CTM extractor runs on 8.3, but I extract for all of
> >        cvs-cur ports-cur src-4 src-5 src-6 src-7 src-8 src-cur
> > Some (4, maybe 6) have long been EOL, but I use them for reasons beyond
> > remit of this thread.
> >
> >
> > > 2) Make ctm a port (so it can have a dependency on xz)
> >
> > I cant imagine many CTM users saying "please kick CTM out of src/" ;-)
> >
> >
> > > 3) If dispensation is granted,
> >
> > Dispensation for what ?
> >
> >
> > >    ensure the dependency is documented in
> > >    UPDATING and ctm.1 when it is MFC'd to 7.x and before.
> >
> > Man ctm says: "The ctm command appeared in FreeBSD 2.1"
> > In theory someone could be extracting on a really old host ?
> > We might be lucky & find all people are extracting on 8.x ?
> > We won't know unless we ask,
> > Stephen could request on ctm-announce@ eg:
> >  "People extracting CTM on old systems are requested to run
> >        uname -r
> >  & if not 8.something-RELEASE or current, report to .... at ....
> >
> > Personaly, I'd think an acceptable middle course could be to switch to
> > whatever reduces the CTM bandwidth the most & put a note in man ctm:
> >        "If running FreeBSD-x or earlier you need to
> >         cd /usr/ports/archivers/xz ; make install"
> >
> 
> How does a manpage entry help? It'll only appear on later versions, where
> It's irrelevant, and not appear on earlier versions, where it would help!

I see what you mean, but often I read a manual on 1 host while
running a prog on another. Notleast cos newer manuals sometimes
list more limitations, eg this. Adding a note to manual would be useful,

As above would Stephen's run time err. message.

> Perhaps a note could be put into the Handbook entry?

Sure, good idea. though not all have handbook, not all on line,
(though personaly I mirror handbook to laptop for ref. before traveling).

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Duplicate ;-).

Cheers,
Julian
-- 
Julian Stacey, BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com
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