Andi Payn <[EMAIL PROTECTED]> writes:
> I wrote a quick python hack to look for any current packages that obsolete any
> other current package. I've included it at the end of this email.
> Unfortunately, I think it would take just about forever for me to run it
> (~5000 urpmf calls). Anyone who can run it faster, I'll be your best friend
> and love you forever and ever and all that stuff....
>
> You'll probably have to change line 6 (where I set urpmflags to select the
> right media), but that's about it. Oh, and ignore the tmpnam warnings;
> there's no other good alternative without python-expect or -pexpect. Just
> don't run two copies at once.
>
> Also, I have a few questions:
>
> 1. Is there a faster way to do this than running urpmf ~5000 times?
Yes, using perl-URPM will to it nicely, look at distriblint packages from
Olivier Thauvin for example.
> 2. Does running urpmf ~5000 times go out to the internet ~5000 times?
No, it only uses local copy of hdlist.
> 3. Would it help if I did this in perl (because we have a perl-URPM but not a
> python-URPM)?
Yes, it will do the equivalent of one urpmf (hdlist loaded once) and everything
else will be very fast.
> 4. Would anyone besides me want a python-URPM? (This would obviously take some
> time, but I'd be happy to look into it.)
If anyone want to do it.
>...
> --- CUT HERE ---
> #!/usr/bin/env python
>
> import sys
> import os
>
> urpmflags = "--media main-cooker,contrib-cooker"
>
> def readfile(fname):
> return file(fname).readlines()
>
> print "Getting list of packages...",
> pkgsfname = os.tmpnam()
> os.system("urpmq %s --list >%s" % (urpmflags, pkgsfname))
The same, this results is immediat (a simple
foreach (@{$urpm->{deplist}}) {
print $_->name."\n";
}
> pkgs = readfile(pkgsfname)
> pkgcount = len(pkgs)
> print pkgcount
>
> obsoletes = []
> provides = {}
> print "This may take a while..."
> pkgfname = os.tmpnam()
> for i in range(pkgcount):
> pkg = pkgs[i]
> print "\rprocessing #%4d/%4d: %s..." % (i, pkgcount, pkg),
> os.system("urpmf %s --provides --obsoletes %s > %s" % (urpmflags,
> pkg.strip(), pkgfname))
Such a command does not read hdlist but synthesis, so your script will be a bit
more faster.
> provobs = readfile(pkgfname)
> for line in provobs:
> ptv = line.strip().split(':')
> if len(ptv) == 3:
> package, tag, virtual = ptv
> if tag == 'obsoletes':
> obsoletes.append([virtual, package])
> elif tag == 'provides':
> if not provides.has_key(virtual):
> provides[virtual] = []
> provides[virtual].append(package)
>
> print "\r",
> for obsolete in obsoletes:
> virtual, pkgo = obsolete
> if provides.has_key(virtual):
> for pkgp in provides[virtual]:
> if pkgp != pkgo:
> print "%s obsoletes %s, provided by %s" % (pkgo, virtual,
> pkgp)
> print "And there you go...."
Fran�ois.
