Re: [gentoo-dev] Script to clean old files from /usr/portage/distfiles

["José Fonseca" <j_r_fonseca@yahoo.co.uk>]

On Tue, Nov 12, 2002 at 01:29:44AM +0100, Marko Mikulicic wrote:
> You read my mind!
> I was just thinking  "i'd like to have a script that ...."
> and you come out with this. great.
> thanks. I should think more often :-)
> 

I'm glad you liked it.

> It would be nice if this script would appear in gentoolkit...
> 
> >
> >I've started with a shell script, then python, then I've read qpkg.sh,
> >ebuild.sh, portage.py and many others in the search of the easiest way
> >to do this. In the end everything boiled down to 2 lines - the rest is
> >just sintatic sugar!
> nice. I just love when sed transforms the command line in completely 
> unreadable magic :-)
> 
> How would be to make it a bit shorter and more configurable in one shot ?:
> 
> -PORTDIR=/usr/portage
> -DISTDIR=$PORTDIR/distfiles
> +. /etc/make.globals;. /etc/make.conf
> (or: for i in /etc/make.{globals,conf} do . $i;done )

This is ok...

> -CACHEDIR=$PORTDIR/metadata/cache
> -PKGDBDIR=/var/db/pkg

...but becare full with these - you should keep them because they're
really not defined on the above files and the getting the last one wrong
will lead to the deletion of all files in distfiles...!

The way the script work is first get the list of all sources related
with the installed files from portache cache, merge it with the list of
sources in distfiles, and delete those which are unique - i.e., only are
in distfiles. There are two caveats with this procedure: 
 - it will delete sources of packages in PORTAGE_OVERLAY, if you have
   any, since they aren't cached.
 - if the cache is busted (or can't be found), the most probable outcome
   is that all files in distfiles get deleted... so a good idea is to
   replace 'rm' by 'echo' to get an idea of what is gonna be deleted.

These two caveats could be overcomed by getting the sources directly
from the installed ebuilds, but that would be terribly slow compared
with this, due to the parsing of all ebuilds.

Regards,

José Fonseca
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