maintainer-needed.py

#!/usr/bin/python
from bs4 import BeautifulSoup
import portage
import urllib2

url = 'http://www.gentoo.org/proj/en/qa/treecleaners/maintainer-needed.xml'

# Build a to remove set
f = urllib2.urlopen(url)
soup = BeautifulSoup(f.read())
table = soup.find('table', {'class': 'ntable'})
toremove = set(row.findChild('a').text for row in table.findChildren('tr')[1:])
f.close()

# Build an installed set
vartree = portage.db[portage.root]['vartree']
installed = set(vartree.dbapi.cp_all())

# Print installed, but to be removed
packages = sorted(toremove.intersection(installed))
if packages:
    print "The following %d installed package(s) need a maintainer" % len(packages)
    for package in packages:
        print "-", package
    exit(1)
else:
    print "All installed packages have a maintainer :)"
    exit(0)