Merge versions in two puppet files.

gistfile1.py

import sys
import re
from pkg_resources import parse_version

updates = sys.stdin.read()
records = updates.split(';')
packages = {}
for record in records:
    fields = [r.strip() for r in record.split('\n') if r.strip()]
    if not fields:
        continue
    p = re.match(r"'(.*)':", fields[0]).group(1)  # package
    e = re.match(r"ensure\s+=>\s+'(.*)'", fields[1]).group(1)   # ensure
    v = parse_version(e)
    if packages.has_key(p):
        # replace the stored version number if it's smaller, otherwise
        # no change.
        if parse_version(packages[p]) < v:
            print '%s: %s -> %s' % (p, packages[p], e)
            packages[p] = e
        elif parse_version(packages[p]) > v:
            print '%s: %s -> %s' % (p, e, packages[p])
    else:
        packages[p] = e

for package, ensure in  sorted(packages.items()):
    print "'%s':" % package
    print "  ensure   => '%s'," % ensure
    print "  provider => 'aptitude';"