diff --git a/README b/README
index e69de29..3d8f20a 100644
--- a/README
+++ b/README
@@ -0,0 +1,6 @@
+apprec.py Depends on:
+
+python
+debian-python
+
+#apt-xapian-index
diff --git a/apprec.py b/apprec.py
new file mode 100644
index 0000000..0f90467
--- /dev/null
+++ b/apprec.py
@@ -0,0 +1,84 @@
+import xapian
+from debian import debtags
+import re
+import sys
+import os
+import commands
+
+DB_PATH = "/var/lib/debtags/package-tags"
+INDEX_PATH = "~/.app-recommender/debtags_index"
+
+INDEX_PATH = os.path.expanduser(INDEX_PATH)
+
+def normalize_tags(string):
+    return string.replace(':','_').replace('-','\'')
+
+def createDebtagsIndex(debtags_db,index_path):
+    if not os.path.exists(index_path):
+        os.makedirs(index_path)
+    print "Creating new debtags xapian index at \'%s\'" % index_path
+    debtags_index = xapian.WritableDatabase(index_path, xapian.DB_CREATE_OR_OVERWRITE)
+    for pkg,tags in debtags_db.iter_packages_tags():
+        doc = xapian.Document()
+        doc.set_data(pkg)
+        for tag in tags:
+            doc.add_term(normalize_tags(tag))
+        print "indexing ",debtags_index.add_document(doc)
+    return debtags_index
+
+# MatchDecider to disconsider installed packages
+class pkgmatchdecider(xapian.MatchDecider):
+    def __init__(self, installed_pkgs):
+        xapian.MatchDecider.__init__(self)
+        self.installed_pkgs = installed_pkgs
+
+    def __call__(self, doc):
+        return doc.get_data() not in self.installed_pkgs
+
+# Handle input arguments
+REINDEX = 0
+if len(sys.argv) == 2:
+    DB_PATH = sys.argv[1]
+    REINDEX = 1
+    print "REINDEX true"
+elif len(sys.argv) > 2:
+    print >> sys.stderr, "Usage: %s [PATH_TO_DEBTAGS_DATABASE]" % sys.argv[0]
+    sys.exit(1)
+
+# Load debtags database
+debtags_db = debtags.DB()
+tag_filter = re.compile(r"^special::.+$|^.+::TODO$")
+try:
+    debtags_db.read(open(DB_PATH, "r"), lambda x: not tag_filter.match(x))
+except IOError:
+    print >> sys.stderr, "IOError: could not open debtags file \'%s\'" % DB_PATH
+    exit(1)
+
+# Set of installed packages
+installed_pkgs = commands.getoutput('/usr/bin/dpkg --get-selections').replace('install','\t').split()
+installed_pkgs_tags = debtags_db.choose_packages(installed_pkgs)
+
+# Most relevant tags
+rel_index = debtags.relevance_index_function(debtags_db, installed_pkgs_tags)
+relevant_tags = sorted(installed_pkgs_tags.iter_tags(), lambda a, b: cmp(rel_index(a), rel_index(b)))
+normalized_relevant_tags = normalize_tags(' '.join(relevant_tags[-50:]))
+
+if not REINDEX:
+    try:
+        print "Opening existing debtags xapian index at \'%s\'" % INDEX_PATH
+        debtags_index = xapian.Database(INDEX_PATH)
+    except DatabaseError:
+        print "Could not open debtags xapian index"
+        REINDEX = 1
+
+if REINDEX:
+    debtags_index = createDebtagsIndex(debtags_db,INDEX_PATH)
+
+qp = xapian.QueryParser()
+query = qp.parse_query(normalized_relevant_tags)
+enquire = xapian.Enquire(debtags_index)
+enquire.set_query(query)
+
+mset = enquire.get_mset(0, 20, None, pkgmatchdecider(installed_pkgs))
+for m in mset:
+    print "%2d: %s" % (m.rank, m.document.get_data())
--
libgit2 0.21.2