diff --git a/archrepo2/lib/archpkg.py b/archrepo2/lib/archpkg.py
index 7761458..bb2d79d 100644
--- a/archrepo2/lib/archpkg.py
+++ b/archrepo2/lib/archpkg.py
@@ -1,5 +1,7 @@
 import os
 from collections import defaultdict, namedtuple
+import subprocess
+import re
 
 from pkg_resources import parse_version
 
@@ -9,7 +11,7 @@ class PkgNameInfo(namedtuple('PkgNameInfo', 'name, version, release, arch')):
       return NotImplemented
     if self.version != other.version:
       return parse_version(self.version) < parse_version(other.version)
-    return int(self.release) < int(other.release)
+    return float(self.release) < float(other.release)
 
   def __gt__(self, other):
     # No, try the other side please.
@@ -28,9 +30,88 @@ def trimext(name, num=1):
     name = os.path.splitext(name)[0]
   return name
 
-def finddups(pkgs, n=1):
-  ret = defaultdict(list)
-  for f in pkgs:
-    name, ver, build, arch = PkgNameInfo.parseFilename(os.path.split(f)[1])
-    ret[name].append('%s-%s' % (ver, build))
-  return {k: sorted(v) for k, v in ret.items() if len(v) > n}
+def get_pkgname_with_bash(PKGBUILD):
+  script = '''\
+. '%s'
+echo ${pkgname[*]}''' % PKGBUILD
+  # Python 3.4 has 'input' arg for check_output
+  p = subprocess.Popen(['bash'], stdin=subprocess.PIPE,
+                       stdout=subprocess.PIPE)
+  output = p.communicate(script.encode('latin1'))[0].decode('latin1')
+  ret = p.wait()
+  if ret != 0:
+    raise subprocess.CalledProcessError(
+      ret, ['bash'], output)
+  return output.split()
+
+def _run_bash(script):
+  p = subprocess.Popen(['bash'], stdin=subprocess.PIPE)
+  p.communicate(script.encode('latin1'))
+  ret = p.wait()
+  if ret != 0:
+    raise subprocess.CalledProcessError(
+      ret, ['bash'])
+
+def get_aur_pkgbuild_with_bash(name):
+  script = '''\
+. /usr/lib/yaourt/util.sh
+. /usr/lib/yaourt/aur.sh
+init_color
+aur_get_pkgbuild '%s' ''' % name
+  _run_bash(script)
+
+def get_abs_pkgbuild_with_bash(name):
+  script = '''\
+. /usr/lib/yaourt/util.sh
+. /usr/lib/yaourt/abs.sh
+init_paths
+init_color
+arg=$(pacman -Sp --print-format '%%r/%%n' '%s')
+RSYNCOPT="$RSYNCOPT -O"
+abs_get_pkgbuild "$arg" ''' % name
+  _run_bash(script)
+
+pkgfile_pat = re.compile(r'(?:^|/).+-[^-]+-[\d.]+-(?:\w+)\.pkg\.tar\.xz$')
+
+def _strip_ver(s):
+  return re.sub(r'[<>=].*', '', s)
+
+def get_package_dependencies(name):
+  out = subprocess.check_output(["package-query", "-Sii", "-f", "%D", name])
+  out = out.decode('latin1')
+  return [_strip_ver(x) for x in out.split() if x != '-']
+
+def get_package_info(name, local=False):
+  old_lang = os.environ['LANG']
+  os.environ['LANG'] = 'C'
+  args = '-Qi' if local else '-Si'
+  try:
+    out = subprocess.check_output(["pacman", args, name])
+    out = out.decode('latin1')
+  finally:
+    os.environ['LANG'] = old_lang
+
+  ret = {}
+  for l in out.splitlines():
+    if not l:
+      continue
+    if l[0] not in ' \t':
+      key, value = l.split(':', 1)
+      key = key.strip()
+      value = value.strip()
+      ret[key] = value
+    else:
+      ret[key] += ' ' + l.strip()
+  return ret
+
+def get_package_repository(name):
+  try:
+    out = subprocess.check_output(["package-query", "-Sii", "-f", "%r", name])
+    repo = out.strip().decode('latin1')
+  except subprocess.CalledProcessError:
+    repo = 'local'
+  return repo
+
+def is_official(name):
+  repo = get_package_repository(name)
+  return repo in ('core', 'extra', 'community', 'multilib', 'testing')
diff --git a/archrepo2/repomon.py b/archrepo2/repomon.py
index d52797f..edcdce1 100755
--- a/archrepo2/repomon.py
+++ b/archrepo2/repomon.py
@@ -27,7 +27,7 @@ from . import dbutil
 logger = logging.getLogger(__name__)
 
 # handles only x86_64, i686 and any arch packages
-_pkgfile_pat = re.compile(r'(?:^|/).+-[^-]+-\d+-(?:x86_64|i686|any)\.pkg\.tar\.xz(?:\.sig)?$')
+_pkgfile_pat = re.compile(r'(?:^|/).+-[^-]+-[\d.]+-(?:x86_64|i686|any)\.pkg\.tar\.xz(?:\.sig)?$')
 
 def same_existent_file(a, b):
   try: